APA (7th ed.) Citation

Merrill, E., Varley, N., Boyce, M. S., & Beyer, H. L. (2007). Willow on Yellowstoneʼs northern range: Evidence for a trophic cascade?

Chicago Style (17th ed.) Citation

Merrill, E., N. Varley, M. S. Boyce, and H. L. Beyer. Willow on Yellowstoneʼs Northern Range: Evidence for a Trophic Cascade? 2007.

MLA (9th ed.) Citation

Merrill, E., et al. Willow on Yellowstoneʼs Northern Range: Evidence for a Trophic Cascade? 2007.