Walther, A. (1973). August Gaul. Seemann.
Cita Chicago (17th ed.)Walther, Angelo. August Gaul. Leipzig: Seemann, 1973.
Cita MLA (8th ed.)Walther, Angelo. August Gaul. Seemann, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)