Callahan, J. F., & Clark, L. H. (1988). Teaching in the middle and secondary schools: Planning for competence (3rd ed.). Macmillan Publishing Company ; Collier Macmillan Publishers.
Citazione stile Chigago Style (17a edizione)Callahan, Joseph F., e Leonard H. Clark. Teaching in the Middle and Secondary Schools: Planning for Competence. 3rd ed. New York : London: Macmillan Publishing Company ; Collier Macmillan Publishers, 1988.
Citatione MLA (9a ed.)Callahan, Joseph F., e Leonard H. Clark. Teaching in the Middle and Secondary Schools: Planning for Competence. 3rd ed. Macmillan Publishing Company ; Collier Macmillan Publishers, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.