APA (7th ed.) Citation

Thieroff, R., & Vogel, P. M. (2009). Flexion. Winter.

Chicago Style (17th ed.) Citation

Thieroff, Rolf, and Petra M. Vogel. Flexion. Heidelberg: Winter, 2009.

MLA (9th ed.) Citation

Thieroff, Rolf, and Petra M. Vogel. Flexion. Winter, 2009.

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