APA (7th ed.) Citation

Walters, E. M. P. (1964). Active simple science. George Allen and Unwin.

Chicago Style (17th ed.) Citation

Walters, E. M. P. Active Simple Science. London: George Allen and Unwin, 1964.

MLA (9th ed.) Citation

Walters, E. M. P. Active Simple Science. George Allen and Unwin, 1964.