Thelen, H. A. (1967). Classroom grouping for teachability. Wiley.
Citación estilo ChicagoThelen, Herbert Arnold. Classroom Grouping for Teachability. New York: Wiley, 1967.
Cita MLAThelen, Herbert Arnold. Classroom Grouping for Teachability. Wiley, 1967.
Warning: These citations may not always be 100% accurate.