The Crossref Curriculum

Dates

Publication dates are essential citation metadata: they must be included to match a citation to a DOI and vice versa. This also affects billing, as a back year must have a back year date at item level. Articles are cited at the item level, so the date in your metadata must be consistent with the date given in a citation for a match to be made.

  • Include a publication_date for every item registered
  • Include the correct date at both the parent and child level (journal issue / article, book title / chapter)
  • Include day, month, and year for each date (unless only month and year recorded)
  • Include both online and print publication dates (if applicable)

Page owner: Laura J. Wilkinson   |   Last updated 2020-April-08