APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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