Gillam. Life and Death in the Central Highlands. University of North Texas Press.
Chicago-referens (17:e uppl.)Gillam. Life and Death in the Central Highlands. University of North Texas Press.
MLA-referens (9:e uppl.)Gillam. Life and Death in the Central Highlands. University of North Texas Press.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.