Gustafson, A. F. 1., Guise, C. H., Hamilton, W. J. 1., & Ries, H. 1. (1949). Conservation in the United States (3. edition.). Ithaca, N.Y.: Comstock.
Chicago Style CitationGustafson, Axel Ferdinand 1880-1942, Cedric Hay Guise, William John 1902-1990 Hamilton, and Heinrich 1871-1951 Ries. Conservation in the United States. 3. edition. Ithaca, N.Y.: Comstock, 1949.
MLA CitationGustafson, Axel Ferdinand 1880-1942, Cedric Hay Guise, William John 1902-1990 Hamilton, and Heinrich 1871-1951 Ries. Conservation in the United States. 3. edition. Ithaca, N.Y.: Comstock, 1949.
Warning: These citations may not always be 100% accurate.