APA (7th ed.) Citation

Bull, E. L. (2005). Ecology of the Columbia spotted frog in northeastern Oregon. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station.

Chicago Style (17th ed.) Citation

Bull, Evelyn L. Ecology of the Columbia Spotted Frog in Northeastern Oregon. [Portland, Or.]: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2005.

MLA (8th ed.) Citation

Bull, Evelyn L. Ecology of the Columbia Spotted Frog in Northeastern Oregon. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2005.