APA

Dunfee M., Sagl H. L., . (1966). Social studies through problem solving: a challenge to elementary school teachers. New York: Holt, Rinehart and Winston.

Chicago

Dunfee Maxine, Sagl Helen L, . 1966. Social studies through problem solving: a challenge to elementary school teachers. New York: Holt, Rinehart and Winston.

Harvard

Dunfee M., Sagl H. L., . (1966). Social studies through problem solving: a challenge to elementary school teachers. New York: Holt, Rinehart and Winston.

MLA

Dunfee Maxine, Sagl Helen L, . Social studies through problem solving: a challenge to elementary school teachers. New York: Holt, Rinehart and Winston. 1966.