American Society of Tool and Manufacturing Engineers., Wilson, F. W., Harvey, P. D., & Gump, C. B. (1965). Die design handbook: A practical reference book on process analysis, product design, metal movements, materials, and proved die designs for every class of sheet-metal pressworking (Second edition.). New York: McGraw-Hill.

American Society of Tool and Manufacturing Engineers., Frank W. Wilson, Philip D. Harvey, and Charles B. Gump. Die Design Handbook: A Practical Reference Book On Process Analysis, Product Design, Metal Movements, Materials, and Proved Die Designs for Every Class of Sheet-metal Pressworking. Second edition. New York: McGraw-Hill, 1965.

American Society of Tool and Manufacturing Engineers., Frank W. Wilson, Philip D. Harvey, and Charles B. Gump. Die Design Handbook: A Practical Reference Book On Process Analysis, Product Design, Metal Movements, Materials, and Proved Die Designs for Every Class of Sheet-metal Pressworking. Second edition. New York: McGraw-Hill, 1965.