Crowley, J. D. (2011). Developing a vision: Strategic planning for the school librarian in the 21st century (Second edition.). Libraries Unlimited.
Lua i Stíl Chicago (17ú heag.)Crowley, John D. Developing a Vision: Strategic Planning for the School Librarian in the 21st Century. Second edition. Santa Barbara, Calif: Libraries Unlimited, 2011.
Lua MLA (9ú heag.)Crowley, John D. Developing a Vision: Strategic Planning for the School Librarian in the 21st Century. Second edition. Libraries Unlimited, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.