Heidmann, L. J., & Thorud, D. B. (1976). Controlling frost heaving of ponderosa pine seedlings in Arizona. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station.
Chicago Style (17th ed.) CitationHeidmann, L. J., and David B. Thorud. Controlling Frost Heaving of Ponderosa Pine Seedlings in Arizona. Fort Collins, Colo.: Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1976.
MLA (9th ed.) CitationHeidmann, L. J., and David B. Thorud. Controlling Frost Heaving of Ponderosa Pine Seedlings in Arizona. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1976.
Warning: These citations may not always be 100% accurate.