APA (7th ed.) Citation

Zanelli, L. (1967). Teach yourself underwater swimming. English Universities Press.

Chicago Style (17th ed.) Citation

Zanelli, Leo. Teach Yourself Underwater Swimming. London: English Universities Press, 1967.

MLA (9th ed.) Citation

Zanelli, Leo. Teach Yourself Underwater Swimming. English Universities Press, 1967.

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