I visited the publisher's own website for the publication in question, clicked on the "Export to BibTeX" button, and retrieved the following bibliographic entry, minimally pretty-printed. (The only substantive change I made as to take "Chapter Six:" out of the title field and create a separate chapter field to store this piece of observation.) Observe that the entry type is @incollection.
@incollection{abril-etal:2013,
author = "Isabel Abril and Rafael Garcia-Molina and Pablo de
Vera and Ioanna Kyriakou and Dimitris Emfietzoglou",
title = "Inelastic Collisions of Energetic Protons in Biological Media",
editor = "D{\v z}evad Belki{\'c}",
booktitle = "{Theory of Heavy Ion Collision Physics in Hadron Therapy}",
year = 2013,
chapter = 6,
pages = "129--164",
series = "Advances in Quantum Chemistry",
publisher = "Academic Press",
volume = 65,
number = "Supplement C",
issn = "0065-3276",
doi = "https://doi.org/10.1016/B978-0-12-396455-7.00006-6",
url = "http://www.sciencedirect.com/science/article/pii/B9780123964557000066",
}
You should be able to import this information directly into Mendeley.
Assuming this entry is stored in a bib file called mybib.bib, the following MWE, which loads the apacite citation management package and the apacite bibliography style, will format it according to APA, 6th ed. guidelines.

\documentclass{article}
\usepackage[english]{babel}
\usepackage[a4paper,margin=2.5cm]{geometry}
\usepackage[hyphens]{url}
\frenchspacing % optional
\usepackage[natbibapa]{apacite}
\bibliographystyle{apacite}
\begin{document}
\citet{abril-etal:2013}
\bibliography{mybib}
\end{document}
Obviously, many other bibliography styles may be used instead of apacite.
@inproceedings, or its synonym,@incollection. If this doesn't help, please provide more, specific information about the publication you wish to cite. – Mico Nov 21 '17 at 18:55