APA-referens (7:e uppl.)
Wills, F. R. (1982). World Civilizations: From ancient times through the sixteenth century. D.C. Hearth and Company.
Chicago-referens (17:e uppl.)
Wills, F. Roy. World Civilizations: From Ancient Times Through the Sixteenth Century. Lexington, Massachusetts: D.C. Hearth and Company, 1982.
MLA-referens (9:e uppl.)
Wills, F. Roy. World Civilizations: From Ancient Times Through the Sixteenth Century. D.C. Hearth and Company, 1982.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.