Pledge, H. T. (1939). Science since 1500: A short history of mathematics, physics, chemistry, biology. London: H.M. Stationery office.
শিকাগো স্টাইলে সাইটেশনPledge, H. T. Science Since 1500: A Short History of Mathematics, Physics, Chemistry, Biology. London: H.M. Stationery office, 1939.
এমএলএ সাইটেশনPledge, H. T. Science Since 1500: A Short History of Mathematics, Physics, Chemistry, Biology. London: H.M. Stationery office, 1939.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.