APA (7th ed.) Citation

Bertalanffy, L. v. (1968). Organismic psychology and systems theory. Clark University Press.

Chicago Style (17th ed.) Citation

Bertalanffy, Ludwig von. Organismic Psychology and Systems Theory. [Worcester, Mass.]: Clark University Press, 1968.

MLA (9th ed.) Citation

Bertalanffy, Ludwig von. Organismic Psychology and Systems Theory. Clark University Press, 1968.