APA

Bertalanffy L. v., Rizzo N. D. & Gray W. (1973). Unity through diversity: a Festschrift for Ludwig von Bertalanffy. New York: Gordon and Breach Science Publishers.

Chicago

Bertalanffy Ludwig von, Rizzo Nicholas D and Gray William. 1973. Unity through diversity: a Festschrift for Ludwig von Bertalanffy. New York: Gordon and Breach Science Publishers.

Harvard

Bertalanffy L. v., Rizzo N. D. and Gray W. (1973). Unity through diversity: a Festschrift for Ludwig von Bertalanffy. New York: Gordon and Breach Science Publishers.

MLA

Bertalanffy Ludwig von, Rizzo Nicholas D and Gray William. Unity through diversity: a Festschrift for Ludwig von Bertalanffy. New York: Gordon and Breach Science Publishers. 1973.