Cita APA (7th ed.)

Kötting, R., & Kötting, U. (1990). Spitzenahnenlisten.

Cita Chicago (17th ed.)

Kötting, Rainer, i Ursula Kötting. Spitzenahnenlisten. Darmstadt, 1990.

Cita MLA (8th ed.)

Kötting, Rainer, i Ursula Kötting. Spitzenahnenlisten. 1990.