url: URL of online item. Start the url with the communications protocol e.g. http://.
title: Title of online item.
accessdate: Full date when item was accessed.
last works with first to produce last, first
authorlink works either with author or with last & first to link to the appropriate article. When linking to Wikipedia, wikipedia: must be placed before the linking words (e.g. wikipedia:Eric Cartman). Does not work with URLs.
coauthors: allows additional authors
date: Full date of publication in the same format as the main text of the article.
format: Format, e.g. PDF. HTML implied if not specified.
work: If this item is part of a larger "work", such as a book, periodical or website, write the name of that work.
publisher: Publisher, if any—for example if the website is hosted by a government service, educational institution, or company
location: Geographical place of publication.
pages: pp. 5–7: first page and optional last page. This is for listing the pages relevant to the citation, not the total number of pages in the book.
language: language of publication (don't specify "English" as this is the default).
doi: A digital object identifier for the document, such as 10.1038/news070508-7
archiveurl: The URL of an archived copy of the page, if (or in case) the url becomes unavailable. Requires archivedate.
archivedate: Date when the item was archived (requires archiveurl).