Cita APA

Sumner, W. G. 1., & Persons, S. (1963). Social Darwinism. Englewood Cliffs, N.J.: Prentice Hall, Inc..

Citación estilo Chicago

Sumner, William Graham 1840-1910, y Stow Persons. Social Darwinism. Englewood Cliffs, N.J.: Prentice Hall, Inc., 1963.

Cita MLA

Sumner, William Graham 1840-1910, y Stow Persons. Social Darwinism. Englewood Cliffs, N.J.: Prentice Hall, Inc., 1963.