User talk:Gerry Ashton/collaborate

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[edit] Reliable source decision tree

{Words, sounds, images}
            |
     Fixed in a medium? ------------------------------No--------> Unpublished
            |
           Yes
            |
     Any member of the public may today obtain,
     or may have at the time of publication obtained,
     a copy from the publisher? ------------------------No-----> Unpublished
            |
           Yes
            |
     Reliably attributable to author or pseudonym? -------No---> Unreliable
            |
           Yes
            |
     Reputable publisher? ---------------------------Yes-------> Reliable source
            |
           No
            |
     Regarded as a reliable source in other sources
     that meet Wikipedia reliable sources criteria?  ---Yes----> Reliable source
            |
           No
            |
     Author is an acknowledged authority,
     previously published in same field ----------Yes--------> Somewhat reliable, use      
     as the source in question?                            but try to find better source.
            |
           No
            |
     Source is only being used in a passage
     about the author or publisher? ------------- No---------> Unreliable
            |
          Yes
            |
     Reliable only for the purpose of
     writing about the author or publisher