Galilei, G. (1950). Discourses and mathematical demonstrations concerning two new sciences: The first day, and parts of the second day, the third day and the fourth day. University of Chicago Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Galilei, Galileo. Discourses and Mathematical Demonstrations Concerning Two New Sciences: The First Day, and Parts of the Second Day, the Third Day and the Fourth Day. Chicago: University of Chicago Press, 1950.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Galilei, Galileo. Discourses and Mathematical Demonstrations Concerning Two New Sciences: The First Day, and Parts of the Second Day, the Third Day and the Fourth Day. University of Chicago Press, 1950.
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