Rao, D. B. (2000). International encyclopaedia of science and technology education: Popularization of science and technology education. Discovery Publishing House.
শিকাগো স্টাইলে সাইটেশনRao, Digumarti Bhaskara. International Encyclopaedia of Science and Technology Education: Popularization of Science and Technology Education. New Delhi: Discovery Publishing House, 2000.
এমএলএ সাইটেশনRao, Digumarti Bhaskara. International Encyclopaedia of Science and Technology Education: Popularization of Science and Technology Education. Discovery Publishing House, 2000.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.