APA (7th ed.) Citation

Crowder, A. B., & Wheeler, O. B. (1972). Elementary school mathematics: Methods and materials. W. C. Brown Co.

Chicago Style (17th ed.) Citation

Crowder, Alex B., and Olive Boone Wheeler. Elementary School Mathematics: Methods and Materials. Dubuque, Iowa: W. C. Brown Co, 1972.

MLA (9th ed.) Citation

Crowder, Alex B., and Olive Boone Wheeler. Elementary School Mathematics: Methods and Materials. W. C. Brown Co, 1972.