APA (7th ed.) Citation

Nicholls, T. H., & Skilling, D. D. (1990). Pocket guide to red pine diseases and their management. U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station.

Chicago Style (17th ed.) Citation

Nicholls, Thomas H., and Darroll D. Skilling. Pocket Guide to Red Pine Diseases and Their Management. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1990.

MLA (9th ed.) Citation

Nicholls, Thomas H., and Darroll D. Skilling. Pocket Guide to Red Pine Diseases and Their Management. U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1990.