The correct citation of referenced material is an important aspect of scientific publications. The following guidelines provide a quick starting point for creating and managing citations. The guidelines are structured as follows: first we outline the type of information that can appear in cited items (citation elements), then, for every type of item (article, book, thesis) we indicate information that is required or optional (citation contents), and finally we outline citation formats, give some examples, and describe the tools we use. This guide is intended to be an efficient reference for creating scientific citations. It is biased towards the citation formats supported by BibTeX. It is not intended to be complete or authoritative.