APA (7th ed.) Citation

Riffle, J. W., & Smith, R. S. (1979). Nursery diseases of western conifers ([Revised Apr. 1979.].). Department of Agriculture, Forest Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Riffle, Jerry W., and Richard S. Smith. Nursery Diseases of Western Conifers. [Revised Apr. 1979.]. [Washington]: Department of Agriculture, Forest Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1979.

MLA (9th ed.) Citation

Riffle, Jerry W., and Richard S. Smith. Nursery Diseases of Western Conifers. [Revised Apr. 1979.]. Department of Agriculture, Forest Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1979.