HALL, v., MACKAY, H., & MORGAN, C. (1986). Headteachers at work. Open Univ. Press.
Lua i Stíl Chicago (17ú heag.)HALL, valerie, Hugh MACKAY, agus Colin MORGAN. Headteachers at Work. Philadelphia: Open Univ. Press, 1986.
Lua MLA (9ú heag.)HALL, valerie, et al. Headteachers at Work. Open Univ. Press, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.