Holcomb, E. L. (2012). Essentials for principals: Data-based decision making (3rd ed.). Solution Tree Press.
Lua i Stíl Chicago (17ú heag.)Holcomb, Edie L. Essentials for Principals: Data-based Decision Making. 3rd ed. Bloomington, Ind.: Solution Tree Press, 2012.
Lua MLA (9ú heag.)Holcomb, Edie L. Essentials for Principals: Data-based Decision Making. 3rd ed. Solution Tree Press, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.