Gerrold, D. (2001). Worlds of wonder: How to write science fiction & fantasy. Writer's Digest Books.
Cita Chicago Style (17a ed.)Gerrold, David. Worlds of Wonder: How to Write Science Fiction & Fantasy. Cincinnati, OH: Writer's Digest Books, 2001.
Cita MLA (8a ed.)Gerrold, David. Worlds of Wonder: How to Write Science Fiction & Fantasy. Writer's Digest Books, 2001.
Precaución: Estas citas no son 100% exactas.