Cita APA (7a ed.)

Hair, D. (1963). Economic importance of timber in the United States. U.S. Department of Agriculture, Forest Service.

Cita Chicago Style (17a ed.)

Hair, Dwight. Economic Importance of Timber in the United States. Washington: U.S. Department of Agriculture, Forest Service, 1963.

Cita MLA (9a ed.)

Hair, Dwight. Economic Importance of Timber in the United States. U.S. Department of Agriculture, Forest Service, 1963.