url: URL of an online location where the text of the publication can be found. Cannot be used if title is wikilinked. If applicable, the link may point to the specific page(s) referenced. Do not link to any commercial booksellers, such as Amazon.com. See: WP:PAGELINKS.
accessdate: Full date when original URL was accessed; use the same format as other access and archive dates in the citations.Template:R Do not wikilink. Not required for web pages or linked documents that do not change; mainly for use of web pages that change frequently or have no publication date. Can be hidden or styled by registered editors.
archivedate: Date when the original URL was archived; use the same format as other access and archive dates in the citations.Template:R Do not wikilink. Displays prior to archivedate as "archived from the original on".
deadurl: When the URL is still live, but preemptively archived, then set Template:Para. This changes the display order with the title retaining the original link and the archive linked at the end.
template doc demo: The archive parameters will be error checked to ensure that all the required parameters are included, or else Template:Tl is invoked. With errors, main, help and template pages are placed into Category:Articles with incorrect citation syntax. Set Template:Para to disable categorization; mainly used for documentation where the error is demonstrated.
format: Format of the work referred to by url; for example: PDF, DOC, or XLS; displayed in parentheses after title. HTML is implied and should not be specified. Does not change the external link icon. Note: External link icons do not include alt text; thus, they do not add format information for the visually impaired.