Cita APA (7a ed.)

Willis, R. F. (1986). From ancient times through the sixteenth century (2. ed.). Heath.

Cita Chicago Style (17a ed.)

Willis, Roy F. From Ancient Times Through the Sixteenth Century. 2. ed. Lexington, Mass: Heath, 1986.

Cita MLA (9a ed.)

Willis, Roy F. From Ancient Times Through the Sixteenth Century. 2. ed. Heath, 1986.