APA Citation

Langer, F., Steffen, K., & Becker, O. O. (2009). Olaf Otto Becker - above zero. Hatje Cantz.

MLA Citation

Langer, Freddy, Konrad Steffen, and Olaf Otto Becker. Olaf Otto Becker - Above Zero. Hatje Cantz, 2009.

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