Cita APA (7th ed.)

Constantin, T. (1965). Geheimcode Y. Buchclub 65.

Cita Chicago (17th ed.)

Constantin, Theodor. Geheimcode Y. Berlin: Buchclub 65, 1965.

Cita MLA (8th ed.)

Constantin, Theodor. Geheimcode Y. Buchclub 65, 1965.