I have my references.bib file ready (my main document class is article)
Some of my references are web pages (@misc) and most are scientific papers (@article). If I want the articles to be tagged [1], [2]... etc and the misc to be tagged [i], [ii]... etc, how would I go about doing that?
\documentclass{article}
\begin{document}
\cite{NSF_1}
\bibliographystyle{unsrt}
\bibliography{references}
\end{document}

biblatexas your tags suggest? Or do you usenatbibor another bibliography package? – moewe Jan 19 '18 at 16:46biblatexis a package you need to load explicitly. The built-in solution isthebibliography? Can you show an MWE/MWEB of how you create your bibliography at the moment? You might want to read an introduction to bibliographies in TeX: https://en.wikibooks.org/wiki/LaTeX/Bibliography_Management – moewe Jan 19 '18 at 16:51biblatex. You are using BibTeX. You could switch tobiblatexto use my answer below (see https://tex.stackexchange.com/q/13509/35864 and linked questions for help). If you insist on an answer that works with BibTeX andunsrtyou might want to add that to your question. – moewe Jan 19 '18 at 17:09numericis a style similar tounsrt. You might want to addsorting=noneto have a sorting similar tounsrt. If you need a style even closer tounsrtusebiblatex-trad'sstyle=trad-unsrt. – moewe Jan 19 '18 at 17:38