Foster, R. G. (1950). Marriage and family relationships (Rev. (i.e. 2nd) ed.). Macmillan.
Cita Chicago (17th ed.)Foster, Robert Geib. Marriage and Family Relationships. Rev. (i.e. 2nd) ed. N.Y.: Macmillan, 1950.
Cita MLA (8th ed.)Foster, Robert Geib. Marriage and Family Relationships. Rev. (i.e. 2nd) ed. Macmillan, 1950.
Atenció: Aquestes cites poden no estar 100% correctes.