Copeland, R. W. (1982). Mathematics and the elementary teacher (4th ed.). Macmillan.
Citazione stile Chigago Style (17a edizione)Copeland, Richard W. Mathematics and the Elementary Teacher. 4th ed. New York: Macmillan, 1982.
Citatione MLA (9a ed.)Copeland, Richard W. Mathematics and the Elementary Teacher. 4th ed. Macmillan, 1982.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.