APA (7th ed.) Citation

Silverberg, R. (1970). Worlds of maybe: Seven stories of science fiction ([1st ed.].). T. Nelson.

Chicago Style (17th ed.) Citation

Silverberg, Robert. Worlds of Maybe: Seven Stories of Science Fiction. [1st ed.]. Camden [N.J.]: T. Nelson, 1970.

MLA (9th ed.) Citation

Silverberg, Robert. Worlds of Maybe: Seven Stories of Science Fiction. [1st ed.]. T. Nelson, 1970.