Cita APA (7th ed.)

Clark, T. (1994). The Writer's digest guide to good writing. Writer's Digest Books.

Cita Chicago (17th ed.)

Clark, Thomas. The Writer's Digest Guide to Good Writing. Cincinnati, Ohio: Writer's Digest Books, 1994.

Cita MLA (9th ed.)

Clark, Thomas. The Writer's Digest Guide to Good Writing. Writer's Digest Books, 1994.