APA (7th ed.) Citation

Gerrold, D. (2001). Worlds of wonder: How to write science fiction & fantasy. Writer's Digest Books.

Chicago Style (17th ed.) Citation

Gerrold, David. Worlds of Wonder: How to Write Science Fiction & Fantasy. Cincinnati, OH: Writer's Digest Books, 2001.

MLA (8th ed.) Citation

Gerrold, David. Worlds of Wonder: How to Write Science Fiction & Fantasy. Writer's Digest Books, 2001.

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