Philip M. Johnston, & Murray Liebowitz. (1977). Basic sheet metal skills (instructor's guide). Usa: Delmar Publishers.
Chicago Style CitationPhilip M. Johnston, and Murray Liebowitz. Basic Sheet Metal Skills (instructor's Guide). Usa: Delmar Publishers, 1977.
MLA CitationPhilip M. Johnston, and Murray Liebowitz. Basic Sheet Metal Skills (instructor's Guide). Usa: Delmar Publishers, 1977.
Warning: These citations may not always be 100% accurate.