APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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