Willcox, H., & Coffey, T., Jr. (1977). The effect of application timing on efficacy of Orthene forest spray against the gypsy moth in Pennsylvania. Dept. of Agriculture, Forest Service, Northeastern Area State and Private Forestry.
Chicago Style (17th ed.) CitationWillcox, Henery, and Thomas Coffey, Jr. The Effect of Application Timing on Efficacy of Orthene Forest Spray Against the Gypsy Moth in Pennsylvania. Upper Darby, Pa.: Dept. of Agriculture, Forest Service, Northeastern Area State and Private Forestry, 1977.
MLA (9th ed.) CitationWillcox, Henery, and Thomas Coffey, Jr. The Effect of Application Timing on Efficacy of Orthene Forest Spray Against the Gypsy Moth in Pennsylvania. Dept. of Agriculture, Forest Service, Northeastern Area State and Private Forestry, 1977.