Cita APA (7th ed.)

Robinson, W. J. (1921). Sexual problems of today (9th ed.). Truth Pub. Co..

Cita Chicago (17th ed.)

Robinson, William Josephus. Sexual Problems of Today. 9th ed. New York: Truth Pub. Co., 1921.

Cita MLA (8th ed.)

Robinson, William Josephus. Sexual Problems of Today. 9th ed. Truth Pub. Co., 1921.