Perez, E. J. (1970). Conceptual approach in the teaching of social studies in elementary school.
Citazione stile Chigago Style (17a edizione)Perez, Efigenia J. Conceptual Approach in the Teaching of Social Studies in Elementary School. 1970.
Citatione MLA (9a ed.)Perez, Efigenia J. Conceptual Approach in the Teaching of Social Studies in Elementary School. 1970.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.