Cotton, K., & Savard, W. G. (1980). Class Size. Research on School Effectiveness Project: Topic Summary Report.
Citazione stile Chigago Style (17a edizione)Cotton, K., e W. G. Savard. Class Size. Research on School Effectiveness Project: Topic Summary Report. 1980.
Citatione MLA (9a ed.)Cotton, K., e W. G. Savard. Class Size. Research on School Effectiveness Project: Topic Summary Report. 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.