APA (7th ed.) Citation

Sieniarski, S., & Schmidt, S. (1972). Sport in Polen (o.A.). Verlag Interpress.

Chicago Style (17th ed.) Citation

Sieniarski, Stefan, and Siegfried Schmidt. Sport in Polen. o.A. Warschau: Verlag Interpress, 1972.

MLA (8th ed.) Citation

Sieniarski, Stefan, and Siegfried Schmidt. Sport in Polen. o.A. Verlag Interpress, 1972.

Warning: These citations may not always be 100% accurate.