Tweddle, I. (2000). Simson on porisms: An annotated translation of Robert Simson's posthumous treatise on porisms and other items on this subject. Springer.
শিকাগো স্টাইলে সাইটেশনTweddle, Ian. Simson on Porisms: An Annotated Translation of Robert Simson's Posthumous Treatise on Porisms and Other Items on This Subject. London ; New York: Springer, 2000.
এমএলএ সাইটেশনTweddle, Ian. Simson on Porisms: An Annotated Translation of Robert Simson's Posthumous Treatise on Porisms and Other Items on This Subject. Springer, 2000.
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