Pocket guide to red pine diseases and their management
MLA
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
APA, 7th edition
Nicholls, T. H, & Skilling, D. D. (1990). Pocket guide to red pine diseases and their management. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Chicago, 17th edition
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