Levens, A. S., Schneider, . F. H., & Walter, . L. C. (1980). Graphics in Engineering Design: Workbook 1, a general treatment of engineering graphics. John wiley.
Chicago Style (17th ed.) CitationLevens, A. S., F. H. Schneider, and L. C. Walter. Graphics in Engineering Design: Workbook 1, a General Treatment of Engineering Graphics. New York: John wiley, 1980.
MLA (9th ed.) CitationLevens, A. S., et al. Graphics in Engineering Design: Workbook 1, a General Treatment of Engineering Graphics. John wiley, 1980.
Warning: These citations may not always be 100% accurate.