Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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