Crowley, J. D. (2011). Developing a vision: Strategic planning for the school librarian in the 21st century (Second edition.). Libraries Unlimited.
Chicago-Zitierstil (17. Ausg.)Crowley, John D. Developing a Vision: Strategic Planning for the School Librarian in the 21st Century. Second edition. Santa Barbara, Calif: Libraries Unlimited, 2011.
MLA-Zitierstil (9. Ausg.)Crowley, John D. Developing a Vision: Strategic Planning for the School Librarian in the 21st Century. Second edition. Libraries Unlimited, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.