Cita APA (7th ed.)

Geyer, H. (1954). Am Anfang stand das Ende: Spionage-Roman (o.A.). Kongress-Verlag.

Cita Chicago (17th ed.)

Geyer, Hans-Joachim. Am Anfang Stand Das Ende: Spionage-Roman. o.A. Berlin: Kongress-Verlag, 1954.

Cita MLA (8th ed.)

Geyer, Hans-Joachim. Am Anfang Stand Das Ende: Spionage-Roman. o.A. Kongress-Verlag, 1954.