APA (7th ed.) Citation

Gostelow, M., & Frey, E. (2008). Die Donau. JPM Publ.

Chicago Style (17th ed.) Citation

Gostelow, Martin, and Elke Frey. Die Donau. Lausanne, Suisse: JPM Publ, 2008.

MLA (9th ed.) Citation

Gostelow, Martin, and Elke Frey. Die Donau. JPM Publ, 2008.

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