Bullard, L. (2004). Healing waters: Missouri's historic mineral springs and spas. University of Missouri Press.
Chicago-referens (17:e uppl.)Bullard, Loring. Healing Waters: Missouri's Historic Mineral Springs and Spas. Columbia: University of Missouri Press, 2004.
MLA-referens (9:e uppl.)Bullard, Loring. Healing Waters: Missouri's Historic Mineral Springs and Spas. University of Missouri Press, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.