APA (7th ed.) Citation

Silverberg, R. (1973). A time of changes. Gollancz.

Chicago Style (17th ed.) Citation

Silverberg, Robert. A Time of Changes. London: Gollancz, 1973.

MLA (8th ed.) Citation

Silverberg, Robert. A Time of Changes. Gollancz, 1973.

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