Help:How to verify data

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First, let's assume that you have a copy of the publication itself. To verify it:

• First check to make sure you're really talking about the same edition and printing of the book. Suppose the ISFDB copy say "Tor Books, 1996, $13.95", whereas your copy says 1996 also but is priced at $14.95. Is this an error? Not necessarily -- there may have been multiple printings of this edition, with different prices (and sometimes different cover art). Checking the printing indicators at the front of the book, and see if you can tell which printing yours is. Ideally each publication would list the printing and edition info in the notes, but in most cases there are not multiple printings in a year so the year is sufficient to identify the book.
• Display the publication record. Examine all the data exactly as if you were going to enter it yourself. Are the page numbers accurate for the content? Is the cover artist correctly listed? Are the story authors listed as they appear in this publication? If anything needs to be changed, go ahead and update the ISFDB to have the correct information.
• Once you are satisfied that the information is absolutely correct, click the "Verify this Pub" link in the left navbar. This will display a list of sources, with three radio buttons next to each one. Change the "Primary" line to select the "Verified" radio button. Then click "Submit Data". This will immediately mark the record as verified; there is no moderator approval required for verifications.

If you don't have a copy of the publication, but you do have a copy of one of the bibliographic sources, you can check the information in that source against the record in the ISFDB. The details vary from source to source. For example, the Nicholls/Clute "Encyclopaedia of SF" has little beyond dates of publication and titles for many works, whereas the Tuck "Encyclopedia of SF" has much more detailed information.

• For these sources, simply check whatever data the source lists; if there are no disagreements, mark the source as verified.

These are the bibliographic references that ISFDB recognizes for verification:

Reference	Description
Primary	The actual book or magazine
Clute/Nicholls	The Encyclopedia of Science Fiction, 2nd edition (1993/5)
Clute/Grant	The Encyclopedia of Fantasy (1997); full text available in Amazon's Search Inside
Contento1 (anth/coll)	Index to Science Fiction Anthologies and Collections (till 1983) (web resource that can be searched using Google.)
Locus1	The Locus Index to Science Fiction: 1984-2005 (web resource that can be inurl:index searched using Google)
Reginald1	Science Fiction and Fantasy Literature, a Checklist, 1700-1974
Reginald3	Science Fiction and Fantasy Literature, 1975-1991
Tuck	The Encyclopedia of Science Fiction and Fantasy through 1968
Contento2 (zine)	Science Fiction, Fantasy,