APA (7th ed.) Citation

Seidel, K. W. (1989). A Ponderosa pine-lodgepole pine spacing study in central Oregon: Results after 20 years. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station.

Chicago Style (17th ed.) Citation

Seidel, Kenneth W. A Ponderosa Pine-lodgepole Pine Spacing Study in Central Oregon: Results After 20 Years. Portland, Or. (319 S.W. Pine Street, P.O. Box 3890, Portland 97208): U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1989.

MLA (9th ed.) Citation

Seidel, Kenneth W. A Ponderosa Pine-lodgepole Pine Spacing Study in Central Oregon: Results After 20 Years. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1989.