Template:PublicationFields:ISBN

• ISBN / Catalog # - A field for identification numbers. It should hold the ISBN if the publication has one otherwise it should hold the publication’s catalogue number if available. ISBNs should be entered as stated in the publication. If you are entering something that's not an ISBN then please prefix it with # as in #UQ1064.
  • You may enter the ISBN with or without hyphens. If the ISBN is valid then ISFDB will display it with hyphens. One exception to the enter-as-stated rule is ISBNs delimited with spaces instead of hyphens. The ISBN should be entered using hyphens.
  • You may also see an ISBN of the form "0-586-06604-7-275"; the last three digits indicate a price, and are not part of the ISBN; they should not be entered.
  • In some cases you will see a nine digit SBN, without a leading zero (for English language publications); in this case you can add the leading zero and enter that number.
  • If you entered a value that was not exactly not as stated in the publication then please add a comment about this in the Notes field.
  • For magazines, it is allowable to enter the ISSN. For works that predate ISBNs, the book's catalog number may be placed here. If the book had neither an ISBN nor a catalog number, the field should be left blank and a comment should be added to the notes field that a catalogue number or other identification was not stated.
  • If a publication has more than one number then enter the one that seems most reasonable in the ISBN field but then also add a comment to the notes field about the various numbers and where they are located in the publication. For example, a book may have both an ISBN and a catalogue number. In this case the ISBN would go in the ISBN field and you would make a note, for example, that the ISBN is on the spine and catalogue number is on the front cover.