What social classes owe to each other,
by William Graham Sumner ...

APA Citation

Sumner, W. Graham. (1883). What social classes owe to each other. New York: Harper & brothers.

MLA Citation

Sumner, William Graham, 1840-1910. What Social Classes Owe to Each Other. New York: Harper & brothers, 1883.

Warning: These citations may not always be complete (especially for serials).