APA (7th ed.) Citation

Vallentine, H. R. (1967). Water in the service of man. Penguin Books.

Chicago Style (17th ed.) Citation

Vallentine, H. R. Water in the Service of Man. Harmondsworth, Mddx: Penguin Books, 1967.

MLA (9th ed.) Citation

Vallentine, H. R. Water in the Service of Man. Penguin Books, 1967.