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).