Morgan, A. d. (1914). Essays on the life and work of Newton. The Open Court Publishing.
Chicago-čujuhus (17. p.)Morgan, Augustus de. Essays on the Life and Work of Newton. Chicago: The Open Court Publishing, 1914.
MLA-čujuhus (9. p.)Morgan, Augustus de. Essays on the Life and Work of Newton. The Open Court Publishing, 1914.
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