Dunfee, M., & Sagl, H. L. (1966). Social studies through problem solving: A challenge to elementary school teachers. Holt, Rinehart and Winston.
Citação norma ChicagoDunfee, Maxine, and Helen L. Sagl. Social Studies Through Problem Solving: A Challenge to Elementary School Teachers. New York: Holt, Rinehart and Winston, 1966.
Citação norma MLADunfee, Maxine, and Helen L. Sagl. Social Studies Through Problem Solving: A Challenge to Elementary School Teachers. Holt, Rinehart and Winston, 1966.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.