Arthur Gates and others. (1952). Educational psychology (3ª ed.). The MacMillan Company.
Chicago Style aipamenaArthur Gates and others. Educational Psychology. 3ª ed. New York: The MacMillan Company, 1952.
MLA aipamenaArthur Gates and others. Educational Psychology. 3ª ed. The MacMillan Company, 1952.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.