Cita APA (7a ed.)

Stronge, J. H., & Xu, X. (2021). Qualities of effective principals (2nd edition.). ASCD.

Cita Chicago Style (17a ed.)

Stronge, James H., y Xianxuan Xu. Qualities of Effective Principals. 2nd edition. Alexandria, Virginia: ASCD, 2021.

Cita MLA (8a ed.)

Stronge, James H., y Xianxuan Xu. Qualities of Effective Principals. 2nd edition. ASCD, 2021.