APA (7th ed.) Citation

Butterworth, J. (1969). Productivity now ([1st ed.].). Pergamon Press.

Chicago Style (17th ed.) Citation

Butterworth, Jack. Productivity Now. [1st ed.]. Oxford, New York: Pergamon Press, 1969.

MLA (9th ed.) Citation

Butterworth, Jack. Productivity Now. [1st ed.]. Pergamon Press, 1969.