APA (7th ed.) Citation

Röthel, K. M. Paul Klee.

Chicago Style (17th ed.) Citation

Röthel, Konrad Mitarb. Paul Klee. Wiesbaden.

MLA (8th ed.) Citation

Röthel, Konrad Mitarb. Paul Klee.

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