Robbins, S. P., & DeCenzo, D. A. (1998). Supervision today! (2nd ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Robbins, Stephen P., agus David A. DeCenzo. Supervision Today! 2nd ed. Upper Saddle River, N.J: Prentice Hall, 1998.
Lua MLA (9ú heag.)Robbins, Stephen P., agus David A. DeCenzo. Supervision Today! 2nd ed. Prentice Hall, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.