APA (7th ed.) Citation

Bettsworth, M. (1976). Drownproofing : a technique for water survival / (by) Michael Bettsworth: A technique for water survival. Heinemann Educational.

Chicago Style (17th ed.) Citation

Bettsworth, Michael. Drownproofing : A Technique for Water Survival / (by) Michael Bettsworth: A Technique for Water Survival. London (etc.): Heinemann Educational, 1976.

MLA (9th ed.) Citation

Bettsworth, Michael. Drownproofing : A Technique for Water Survival / (by) Michael Bettsworth: A Technique for Water Survival. Heinemann Educational, 1976.

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