Leighton Wellman, B. (1957). Technical descriptive geometry (2a ed.). McGraw-Hill book company.
Cita Chicago Style (17a ed.)Leighton Wellman, B. Technical Descriptive Geometry. 2a ed. New York: McGraw-Hill book company, 1957.
Cita MLA (9a ed.)Leighton Wellman, B. Technical Descriptive Geometry. 2a ed. McGraw-Hill book company, 1957.
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