APA (7th ed.) Citation

Silverberg, R. (1977). Those who watch. New English Library.

Chicago Style (17th ed.) Citation

Silverberg, Robert. Those Who Watch. London: New English Library, 1977.

MLA (8th ed.) Citation

Silverberg, Robert. Those Who Watch. New English Library, 1977.

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