asin-tld: ASIN top-level domain for Amazon sites other than the US; valid values: co.jp, co.uk, ca, cn, fr, de, it, es
bibcode: Bibcode; used by a number of astronomical data systems; example: 1924MNRAS..84..308E.
doi: DOI; example: 10.1038/news070508-7; checked to ensure it begins with 10.; if not an error shows and the page is placed in Category:含有DOI错误的引用的页面.
doi_brokendate: Date the DOI is broken; use the same format as other dates in the article.
isbn: International Standard Book Number such as 978-0812695939; see Wikipedia:ISBN and ISBN. Dashes in the ISBN are optional, but preferred. Use the 13-digit ISBN where possible; this can normally be found beneath the barcode as a number beginning 978 or 979. For sources with the older 9 digit SBN system, prefix the number with a zero; thus SBN 812695-93-3 should be entered as |isbn=0812695-93-3.