Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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