Cita APA (7a ed.)

Butterfield, O. M. (1939). Love Problems of adolescence. Columbia University.

Cita Chicago Style (17a ed.)

Butterfield, Oliver McKinley. Love Problems of Adolescence. New York: Columbia University, 1939.

Cita MLA (8a ed.)

Butterfield, Oliver McKinley. Love Problems of Adolescence. Columbia University, 1939.