APA (7th ed.) Citation

Rien, M. W. (1972). 4 [Vier]-Tage-Woche.

Chicago Style (17th ed.) Citation

Rien, Mark W. 4 [Vier]-Tage-Woche. 1972.

MLA (9th ed.) Citation

Rien, Mark W. 4 [Vier]-Tage-Woche. 1972.

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