APA (7th ed.) Citation

Frey, G., & Merkt, O. (1949). Ausflüge.

Chicago Style (17th ed.) Citation

Frey, Georg, and Otto Merkt. Ausflüge. 1949.

MLA (9th ed.) Citation

Frey, Georg, and Otto Merkt. Ausflüge. 1949.

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