Bell, R. J. T. (1996). An Elementary Treatise on Coordinate Geometry of Three Dimensions (4th ed.). Macmillan.
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Dyfyniad Arddull Chicago
Bell, Robert J. T. An Elementary Treatise on Coordinate Geometry of Three Dimensions. 4th ed. New Delhi: Macmillan, 1996.
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Dyfyniad MLA
Bell, Robert J. T. An Elementary Treatise on Coordinate Geometry of Three Dimensions. 4th ed. Macmillan, 1996.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.