Cita APA (7th ed.)

Spiro, R., & Morgenroth, F. (1971). 1 - 2 - 3 Straße frei: Roman Spiro. Text: Friedrich Morgenroth. Schneider.

Cita Chicago (17th ed.)

Spiro, Roman, i Friedrich Morgenroth. 1 - 2 - 3 Straße Frei: Roman Spiro. Text: Friedrich Morgenroth. München, Wien: Schneider, 1971.

Cita MLA (8th ed.)

Spiro, Roman, i Friedrich Morgenroth. 1 - 2 - 3 Straße Frei: Roman Spiro. Text: Friedrich Morgenroth. Schneider, 1971.