Franklin

MLA

Stern, Catherine. Children Discover Arithmetic: an Introduction to Structural Arithmetic. [1st ed.]. New York: Harper, 1949.

APA

Stern, C. (1949). Children discover arithmetic: an introduction to structural arithmetic. [1st ed.]. New York: Harper.

Chicago

Stern, Catherine, Children Discover Arithmetic: An Introduction to Structural Arithmetic. [1st ed.]. New York: Harper, 1949.