APA (7th ed.) Citation

Pfeiffenberger, J., & Donohue, L. (2021). Swimming on your back. National Park Service.

Chicago Style (17th ed.) Citation

Pfeiffenberger, Jim, and Lisa Donohue. Swimming on Your Back. [Juneau, Alaska]: National Park Service, 2021.

MLA (9th ed.) Citation

Pfeiffenberger, Jim, and Lisa Donohue. Swimming on Your Back. National Park Service, 2021.