APA (7th ed.) Citation

Niven, L. (1968). World of Ptavvs. Macdonald.

Chicago Style (17th ed.) Citation

Niven, Larry. World of Ptavvs. London: Macdonald, 1968.

MLA (8th ed.) Citation

Niven, Larry. World of Ptavvs. Macdonald, 1968.

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