Sparling, D. W. (2014). Natural resource administration: Wildlife, fisheries, forests and parks. Academic Press.
Chicago-referens (17:e uppl.)Sparling, Donald W. Natural Resource Administration: Wildlife, Fisheries, Forests and Parks. San Diego, CA: Academic Press, 2014.
MLA-referens (9:e uppl.)Sparling, Donald W. Natural Resource Administration: Wildlife, Fisheries, Forests and Parks. Academic Press, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.