Hoelscher, R. P., Springer, C. H., & Dobrovolny, J. S. (1964). Basic drawing for engineering technology. Wiley.
Cita Chicago Style (17a ed.)Hoelscher, Randolph P., Clifford H. Springer, y Jerry S. Dobrovolny. Basic Drawing for Engineering Technology. New York: Wiley, 1964.
Cita MLA (8a ed.)Hoelscher, Randolph P., et al. Basic Drawing for Engineering Technology. Wiley, 1964.
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