Cita APA (7a ed.)

Blackmar, F. W. (1908). The elements of sociology. Macmillan and Co..

Cita Chicago Style (17a ed.)

Blackmar, Frank W. The Elements of Sociology. London: Macmillan and Co., 1908.

Cita MLA (8a ed.)

Blackmar, Frank W. The Elements of Sociology. Macmillan and Co., 1908.