APA (7th ed.) Citation
Hanna, L. A., Hagaman, N., & Potter, G. L. Unit teaching in the elementary school.
Chicago Style (17th ed.) Citation
Hanna, Lavone A., Neva Hagaman, and Gladys L. Potter. Unit Teaching in the Elementary School.
MLA (9th ed.) Citation
Hanna, Lavone A., et al. Unit Teaching in the Elementary School.
Warning: These citations may not always be 100% accurate.