APA (7th ed.) Citation

Riegel, G. (2021). Das Allgäuer Voralpenland.

Chicago Style (17th ed.) Citation

Riegel, Günter. Das Allgäuer Voralpenland. 2021.

MLA-Citation (8th Edition)

Riegel, Günter. Das Allgäuer Voralpenland. 2021.

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