Hair, D. (1963). Economic importance of timber in the United States. U.S. Department of Agriculture, Forest Service.
Chicago Style (17th ed.) CitationHair, Dwight. Economic Importance of Timber in the United States. Washington: U.S. Department of Agriculture, Forest Service, 1963.
MLA引文Hair, Dwight. Economic Importance of Timber in the United States. U.S. Department of Agriculture, Forest Service, 1963.
警告:這些引文格式不一定是100%准確.