APA (7th ed.) Citation

Kotok, E. S. (1973). Western larch. U.S. Dept. of Agriculture, Forest Service : For sale by the Supt. of Docs., U.S. G.P.O..

Chicago Style (17th ed.) Citation

Kotok, Edward S. Western Larch. Washington, D.C.: U.S. Dept. of Agriculture, Forest Service : For sale by the Supt. of Docs., U.S. G.P.O., 1973.

MLA (9th ed.) Citation

Kotok, Edward S. Western Larch. U.S. Dept. of Agriculture, Forest Service : For sale by the Supt. of Docs., U.S. G.P.O., 1973.