APA (7th ed.) Citation

Michelsen, G. e. a. (1980). Der Fischer Oeko-Almanach. Fischer.

Chicago Style (17th ed.) Citation

Michelsen, Gerd et al. Der Fischer Oeko-Almanach. Fischer, 1980.

MLA (8th ed.) Citation

Michelsen, Gerd et al. Der Fischer Oeko-Almanach. Fischer, 1980.

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