Penland, P. R., & Fine, S. (1974). Group dynamics and individual development. M. Dekker.
Cita Chicago (17th ed.)Penland, Patrick R., i Sara Fine. Group Dynamics and Individual Development. New York: M. Dekker, 1974.
Cita MLA (8th ed.)Penland, Patrick R., i Sara Fine. Group Dynamics and Individual Development. M. Dekker, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.