Dyfyniad APA
Neff, G. T. (1989). 1990 writer's market: Where and how to sell what you write (ed.). Writer's digest Books.
Dyfyniad Arddull Chicago
Neff, Glenda Tennnant. 1990 Writer's Market: Where and How to Sell What You Write. ed. Cincinnati: Writer's digest Books, 1989.
Dyfyniad MLA
Neff, Glenda Tennnant. 1990 Writer's Market: Where and How to Sell What You Write. ed. Writer's digest Books, 1989.
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