Cita APA (7th ed.)
Bell, R. R. (1968). Studies in marriage and the family. Crowell.
Cita Chicago (17th ed.)
Bell, Robert R. Studies in Marriage and the Family. New York: Crowell, 1968.
Cita MLA (9th ed.)
Bell, Robert R. Studies in Marriage and the Family. Crowell, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.