APA (7th ed.) Citation

Anderson, P. (1961). Guardians of time. Gollancz.

Chicago Style (17th ed.) Citation

Anderson, Poul. Guardians of Time. London: Gollancz, 1961.

MLA (8th ed.) Citation

Anderson, Poul. Guardians of Time. Gollancz, 1961.

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