Cassill, K. (1981). The complete handbook for freelance writers. Writer's Digest Books.
Citazione stile Chigago Style (17a edizione)Cassill, Kay. The Complete Handbook for Freelance Writers. Cincinnati, Ohio: Writer's Digest Books, 1981.
Citatione MLA (9a ed.)Cassill, Kay. The Complete Handbook for Freelance Writers. Writer's Digest Books, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.