APA (7th ed.) Citation

Fehr, H. F., & Phillips, J. M. (1972). Teaching modern mathematics in the elementary school (2.ed.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Fehr, Howard F., and Jo M. Phillips. Teaching Modern Mathematics in the Elementary School. 2.ed. Reading, Mass: Addison-Wesley, 1972.

MLA (9th ed.) Citation

Fehr, Howard F., and Jo M. Phillips. Teaching Modern Mathematics in the Elementary School. 2.ed. Addison-Wesley, 1972.