Gans, D. (1973). An introduction to non-Euclidean geometry. Academic Press.
Style de citation Chicago (17e éd.)Gans, David. An Introduction to Non-Euclidean Geometry. New York ; London: Academic Press, 1973.
Style de citation MLA (8e éd.)Gans, David. An Introduction to Non-Euclidean Geometry. Academic Press, 1973.
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