APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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