Cita APA (7a ed.)
Hanna, L. A., Hagaman, N., & Potter, G. L. (1961). Unit teaching in the elementary school.
Cita estilo Chicago (17a ed.)
Hanna, Lavone A., Neva Hagaman, y Gladys L. Potter. Unit Teaching in the Elementary School. 1961.
Cita MLA (9a ed.)
Hanna, Lavone A., et al. Unit Teaching in the Elementary School. 1961.
Precaución: Estas citas no son 100% exactas.