Cita APA (7th ed.)

Morgenroth, W. (1968). Das Papageienbuch. Rütten & Loening.

Cita Chicago (17th ed.)

Morgenroth, Wolfgang. Das Papageienbuch. Berlin: Rütten & Loening, 1968.

Cita MLA (8th ed.)

Morgenroth, Wolfgang. Das Papageienbuch. Rütten & Loening, 1968.