APA (7th ed.) Citation

Jorgensen, S. E., Friis, M., & Mejer, H. Examination of a lake model.

Chicago Style (17th ed.) Citation

Jorgensen, Sven Erik, Mogens Friis, and Henning Mejer. Examination of a Lake Model.

MLA (9th ed.) Citation

Jorgensen, Sven Erik, et al. Examination of a Lake Model.