APA (7th ed.) Citation

Skilling, D. D., O'Brien, J. T., & Beil, J. A. (1979). Scleroderris canker of northern conifers ([Rev. Mar. 1979.].). Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

Skilling, Darroll D., James T. O'Brien, and James A. Beil. Scleroderris Canker of Northern Conifers. [Rev. Mar. 1979.]. [Washington]: Dept. of Agriculture, Forest Service, 1979.

MLA (9th ed.) Citation

Skilling, Darroll D., et al. Scleroderris Canker of Northern Conifers. [Rev. Mar. 1979.]. Dept. of Agriculture, Forest Service, 1979.