APA-referens (7:e uppl.)

Assagioli, R. (1973). The act of will (ed.). Penguin group.

Chicago-referens (17:e uppl.)

Assagioli, Roberto. The Act of Will. ed. New York: Penguin group, 1973.

MLA-referens (9:e uppl.)

Assagioli, Roberto. The Act of Will. ed. Penguin group, 1973.