APA (7th ed.) Citation

Poets & Writers, Inc. (1979). A writer's guide to copyright. Poets & Writers.

Chicago Style (17th ed.) Citation

Poets & Writers, Inc. A Writer's Guide to Copyright. New York: Poets & Writers, 1979.

MLA (9th ed.) Citation

Poets & Writers, Inc. A Writer's Guide to Copyright. Poets & Writers, 1979.

Warning: These citations may not always be 100% accurate.