APA (7th ed.) Citation

Ryman, G. (2009). When it changed: Science into fiction : an anthology. Comma Press.

Chicago Style (17th ed.) Citation

Ryman, Geoff. When It Changed: Science into Fiction : An Anthology. [Manchester, England]: Comma Press, 2009.

MLA (9th ed.) Citation

Ryman, Geoff. When It Changed: Science into Fiction : An Anthology. Comma Press, 2009.