Webster, W. E. (1994). Voices in the Hall high school pricipals at work. Phi Delta Kappa Educational Foundation.
Lua i Stíl Chicago (17ú heag.)Webster, William E. Voices in the Hall High School Pricipals at Work. USA: Phi Delta Kappa Educational Foundation, 1994.
Lua MLA (9ú heag.)Webster, William E. Voices in the Hall High School Pricipals at Work. Phi Delta Kappa Educational Foundation, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.