APA (7th ed.) Citation

Duvoisin, R. (1971). Billy Langohr. Herder.

Chicago Style (17th ed.) Citation

Duvoisin, Roger. Billy Langohr. Freiburg i. Br.. Basel, Wien: Herder, 1971.

MLA (9th ed.) Citation

Duvoisin, Roger. Billy Langohr. Herder, 1971.

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