Cita APA (7a ed.)

May, R. (1969). Existential psychology (2nd ed.). Random House.

Cita Chicago Style (17a ed.)

May, Rollo. Existential Psychology. 2nd ed. New York: Random House, 1969.

Cita MLA (9a ed.)

May, Rollo. Existential Psychology. 2nd ed. Random House, 1969.