APA (7th ed.) Citation

Engel, E., & Stemmle, R. A. (1961). Affäre Blum.

Chicago Style (17th ed.) Citation

Engel, Erich, and Robert Adolf Stemmle. Affäre Blum. 1961.

MLA (9th ed.) Citation

Engel, Erich, and Robert Adolf Stemmle. Affäre Blum. 1961.

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