Cita APA

Sumner, W. G. (1986). What social classes owe to each other (10a. ed.). Caxton Printers, Ltd.

Citación estilo Chicago

Sumner, William Graham. What Social Classes Owe to Each Other. 10a. ed. Caldwell: Caxton Printers, Ltd, 1986.

Cita MLA

Sumner, William Graham. What Social Classes Owe to Each Other. 10a. ed. Caxton Printers, Ltd, 1986.

Warning: These citations may not always be 100% accurate.