Sparks, D. (2002). Designing powerful professional development for teachers and principals. Oxford, OH: National Staff Development Council.
শিকাগো স্টাইলে সাইটেশনSparks, Dennis. Designing Powerful Professional Development for Teachers and Principals. Oxford, OH: National Staff Development Council, 2002.
এমএলএ সাইটেশনSparks, Dennis. Designing Powerful Professional Development for Teachers and Principals. Oxford, OH: National Staff Development Council, 2002.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.