Cita APA (7th ed.)
Backus, W. D. (1992). Empowering parents. Bethany.
Cita Chicago (17th ed.)
Backus, William D. Empowering Parents. Minneapolis: Bethany, 1992.
Cita MLA (9th ed.)
Backus, William D. Empowering Parents. Bethany, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.