APA (7th ed.) Citation

Rutkiewicz, I., Schmidt, S., & Poplonski, J. (1977). Die Oder (o.A.). Interpress.

Chicago Style (17th ed.) Citation

Rutkiewicz, Ignacy, Siegfried Schmidt, and Jan Poplonski. Die Oder. o.A. Warschau: Interpress, 1977.

MLA (8th ed.) Citation

Rutkiewicz, Ignacy, et al. Die Oder. o.A. Interpress, 1977.