APA (7th ed.) Citation

Silverberg, R., Benford, G., Simak, C. D., & Spinrad, N. (1974). Threads of time: Three original novellas of science fiction ([Book club ed.].). T. Nelson.

Chicago Style (17th ed.) Citation

Silverberg, Robert, Gregory Benford, Clifford D. Simak, and Norman Spinrad. Threads of Time: Three Original Novellas of Science Fiction. [Book club ed.]. Nashville: T. Nelson, 1974.

MLA (9th ed.) Citation

Silverberg, Robert, et al. Threads of Time: Three Original Novellas of Science Fiction. [Book club ed.]. T. Nelson, 1974.