Cita APA (7th ed.)
Hofstadter, R. (1945). Social Darwinism in American thought, 1860-1915. Univ. of Pennsylvania Pr.
Cita Chicago (17th ed.)
Hofstadter, Richard. Social Darwinism in American Thought, 1860-1915. Philadelphia: Univ. of Pennsylvania Pr, 1945.
Cita MLA (9th ed.)
Hofstadter, Richard. Social Darwinism in American Thought, 1860-1915. Univ. of Pennsylvania Pr, 1945.
Atenció: Aquestes cites poden no estar 100% correctes.