APA (7. basım) Alıntı

Sumner, W. G. (1952). What social classes owe to each other. Caxton Printers.

Chicago Style (17. basım) Atıf

Sumner, William Graham. What Social Classes Owe to Each Other. Caldwell, Idaho: Caxton Printers, 1952.

MLA (9th ed.) Atıf

Sumner, William Graham. What Social Classes Owe to Each Other. Caxton Printers, 1952.