APA (7th ed.) Citation

Friedman, I., Norton, D. R., & Hutchinson, R. A. (1993). Monitoring of thermal acitivity in Southwestern Yellowstone National Park and vicinity: 1980 - 1993. US Gov. Print. Off.

Chicago Style (17th ed.) Citation

Friedman, Irving, Daniel R. Norton, and Roderick A. Hutchinson. Monitoring of Thermal Acitivity in Southwestern Yellowstone National Park and Vicinity: 1980 - 1993. Washington, DC: US Gov. Print. Off, 1993.

MLA (9th ed.) Citation

Friedman, Irving, et al. Monitoring of Thermal Acitivity in Southwestern Yellowstone National Park and Vicinity: 1980 - 1993. US Gov. Print. Off, 1993.