Cita APA (7th ed.)

Martin DuGard, R., & Martin DuGard, R. (1959). Roman 5/6. Verl. Volk u. Welt.

Cita Chicago (17th ed.)

Martin DuGard, Roger, i Roger Martin DuGard. Roman 5/6. Berlin: Verl. Volk u. Welt, 1959.

Cita MLA (8th ed.)

Martin DuGard, Roger, i Roger Martin DuGard. Roman 5/6. Verl. Volk u. Welt, 1959.