Wakeley, P. C. (1954). Planting the southern pines. Forest Service, U.S. Dept. of Agriculture.
Chicago-referens (17:e uppl.)Wakeley, Philip Carman. Planting the Southern Pines. Washington: Forest Service, U.S. Dept. of Agriculture, 1954.
MLA-referens (8:e uppl.)Wakeley, Philip Carman. Planting the Southern Pines. Forest Service, U.S. Dept. of Agriculture, 1954.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.