APA (7th ed.) Citation

Andree, K., Heiderich, F., & Sieger, R. (1912). Karl Andree's Geographies des Welthandels. Heinrich Keller.

Chicago Style (17th ed.) Citation

Andree, Karl, Franz Heiderich, and Robert Sieger. Karl Andree's Geographies Des Welthandels. Franfurt: Heinrich Keller, 1912.

MLA (9th ed.) Citation

Andree, Karl, et al. Karl Andree's Geographies Des Welthandels. Heinrich Keller, 1912.