Banks, J. H. (1959). Learning and teaching arithmetic. Allyn and Bacon.
Citazione stile Chigago Style (17a edizione)Banks, John Houston. Learning and Teaching Arithmetic. Boston: Allyn and Bacon, 1959.
Citatione MLA (9a ed.)Banks, John Houston. Learning and Teaching Arithmetic. Allyn and Bacon, 1959.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.