Richards, L. O. (1975). A theology of christian education. Zondervan.
Cita Chicago (17th ed.)Richards, Lawrence O. A Theology of Christian Education. Zondervan, 1975.
Cita MLA (9th ed.)Richards, Lawrence O. A Theology of Christian Education. Zondervan, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.