Cita APA (7th ed.)
Wills, F. R. (1982). World Civilizations: From ancient times through the sixteenth century. D.C. Hearth and Company.
Cita Chicago (17th ed.)
Wills, F. Roy. World Civilizations: From Ancient Times Through the Sixteenth Century. Lexington, Massachusetts: D.C. Hearth and Company, 1982.
Cita MLA (9th ed.)
Wills, F. Roy. World Civilizations: From Ancient Times Through the Sixteenth Century. D.C. Hearth and Company, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.