Cita APA (7th ed.)
Posterski, D. C. (1986). Friendship: A window on ministry to youth. Project teen.
Cita Chicago (17th ed.)
Posterski, Donald C. Friendship: A Window on Ministry to Youth. Ontario: Project teen, 1986.
Cita MLA (9th ed.)
Posterski, Donald C. Friendship: A Window on Ministry to Youth. Project teen, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.