APA (7th ed.) Citation

Engelmann, B., & Engelmann, B. (1989). Die unsichtbare Tradition. Die unsichtbare Tradition.

Chicago Style (17th ed.) Citation

Engelmann, Bernt, and Bernt Engelmann. "Die Unsichtbare Tradition." Die Unsichtbare Tradition 1989.

MLA (8th ed.) Citation

Engelmann, Bernt, and Bernt Engelmann. "Die Unsichtbare Tradition." Die Unsichtbare Tradition, 1989.

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