Cita APA (7th ed.)

Riemer, O., & Frommel, G. Ernst-Lothar v.[on] Knorr.

Cita Chicago (17th ed.)

Riemer, Otto, i Gerhard Frommel. Ernst-Lothar V.[on] Knorr. o. O.

Cita MLA (8th ed.)

Riemer, Otto, i Gerhard Frommel. Ernst-Lothar V.[on] Knorr.