APA (7th ed.) Citation

Béguin, C., Hegg, O., & Zoller, H. (1977). Ecograms of Swiss forest associations ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Béguin, Claude, Otto Hegg, and Heinrich Zoller. Ecograms of Swiss Forest Associations. [Sonderdr.]. 1977.

MLA (9th ed.) Citation

Béguin, Claude, et al. Ecograms of Swiss Forest Associations. [Sonderdr.]. 1977.