Não informado. Thrust for educational leadership. Association of California School Administrators.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Thrust for Educational Leadership. Burlingame, Calif: Association of California School Administrators.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Thrust for Educational Leadership. Association of California School Administrators.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.