Biblatex - Multiple authors - 'and' should become '&' + DOT between title and publisher

Question

Title says it all :)

My college has its own formatting rules so I need this to be pixel perfect :/

• The default output is author AND author. I need author & author
• The title of the book has to have a DOT, even when said title already ends with 3 of them.

Can somebody apply hers/his tex-fu on my problem? My college will be forever gratefull as I will be publishing my .sty file once I (yeah, this forum) has pretty much hacked all quircks..;

thank you !

references.bib

@book{valeriusNederlandtscheGedenckclanckKortelick1968,
  title = {Neder-Landtsche Gedenck-Clanck. {{Kortelick}} Openbarende de Voornaemste Geschiedenissen van de Seventhien {{Neder}}-{{Landsche}} Provintien, 't Sedert Den Aenvang Der Inlandsche Beroerten Ende Troublen, Tot Den Iare 1625. {{Verciert}} Met Verscheydene Aerdige Figuerlicke Platen, Ende Stichtelijke Rimen Ende Liedekens ... {{De}} Liedekens ... Gestelt Op Musycknoten ...},
  publisher = {{Amsterdam : Facsimile uitgaven Nederland}},
  author = {Valerius, Adrianus and Meertens, Pieter Jacobus and Tenhaeff, Nicolaas Bernardus and {Komter-Kuipers}, T},
  year = {1968}
}

document

\documentclass[a4paper]{article}

% Biblatex
\usepackage[bibstyle=authoryear,
            citestyle=authoryear,
            maxbibnames=99,              
            sortcites,                  
            giveninits=true,
            doi=false,
            isbn=false,
            dashed=false,
            backend=biber]{biblatex}
% end biblatex
\addbibresource{./bib/references.bib}

\begin{document}

\cite{valeriusNederlandtscheGedenckclanckKortelick1968}

\newpage
\setquotestyle{british}
\printbibliography
\end{document}

Generated Output

Valerius, A., P. J. Meertens, N. B. Tenhaeff en T. Komter-Kuipers (1968). NederLandtsche Gedenck-Clanck - Op Musycknoten ... publisher

Desired Output

Valerius, A., P. J. Meertens, N. B. Tenhaeff & T. Komter-Kuipers (1968). NederLandtsche Gedenck-Clanck - Op Musycknoten .... publisher

Answer 1

No. 1 is easily solved with

\DeclareDelimFormat{finalnamedelim}{\addspace\&\space}

For no. 2 I found it easiest to trick biblatex into adding a further full stop by adding \@ after the ... in the title. Normally biblatex suppresses double punctuation (or quadruple punctuation as would be the case here) when a dot or full stops meets another full stop.

\documentclass[a4paper,dutch]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[style=authoryear,
            maxbibnames=99,              
            sortcites,                  
            giveninits=true,
            doi=false,
            isbn=false,
            dashed=false,
            backend=biber]{biblatex}

\DeclareDelimFormat{finalnamedelim}{\addspace\&\space}

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@book{valeriusNederlandtscheGedenckclanckKortelick1968,
  title     = {Neder-Landtsche Gedenck-Clanck.
               {Kortelick} Openbarende de Voornaemste Geschiedenissen van de
               Seventhien {Neder}-{Landsche} Provintien, 't Sedert Den
               Aenvang Der Inlandsche Beroerten Ende Troublen, Tot Den Iare 1625.
               {Verciert} Met Verscheydene Aerdige Figuerlicke Platen,
               Ende Stichtelijke Rimen Ende Liedekens \dots{}
               {De} Liedekens \dots{} Gestelt Op Musycknoten \dots\@},
  location  = {Amsterdam},
  publisher = {Facsimile uitgaven Nederland},
  author    = {Valerius, Adrianus and Meertens, Pieter Jacobus
     and Tenhaeff, Nicolaas Bernardus and Komter-Kuipers, T},
  year      = {1968}
}
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}
\cite{valeriusNederlandtscheGedenckclanckKortelick1968}

\printbibliography
\end{document}

Note that I used \dots instead of ... to obtain the ellipsis symbol. If the ellipsis-period combination looks odd to you, you may want to try

Gestelt Op Musycknoten \dots\,\@

Normally

Gestelt Op Musycknoten ...\@

should be avoided. See What is best method to insert an ellipsis in a (Xe)TeX document?, you may also want to look into the ellipsis or xellipsis package.