Riddle, D. F. (1982). Analytic geometry (3rd ed.). Wadsworth Publishing Company.
Tohutoru Kātū Chicago (17th ed.)Riddle, Douglas F. Analytic Geometry. 3rd ed. California: Wadsworth Publishing Company, 1982.
Tohutoro MLA (9th ed.)Riddle, Douglas F. Analytic Geometry. 3rd ed. Wadsworth Publishing Company, 1982.
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