Chahly, A. T., Tchernukhin, A. E., & Botting, T. (1968). Descriptive geometry (2nd ed.). Moscow: Higher School Publishing House.
Παραπομπή Chicago StyleChahly, A. T., A. E. Tchernukhin, and Th Botting. Descriptive Geometry. 2nd ed. Moscow: Higher School Publishing House, 1968.
Παραπομπή MLAChahly, A. T., A. E. Tchernukhin, and Th Botting. Descriptive Geometry. 2nd ed. Moscow: Higher School Publishing House, 1968.
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