Besterfield, D. H., & OHagan, R. E. (1998). Technical sketching with an introduction to CAD: For engineers, technologists, and technicians (3rd ed.). Prentice Hall.
Citace podle Chicago (17th ed.)Besterfield, Dale H., a Robert E. OHagan. Technical Sketching with an Introduction to CAD: For Engineers, Technologists, and Technicians. 3rd ed. Upper Saddle River, N.J: Prentice Hall, 1998.
Citace podle MLA (9th ed.)Besterfield, Dale H., a Robert E. OHagan. Technical Sketching with an Introduction to CAD: For Engineers, Technologists, and Technicians. 3rd ed. Prentice Hall, 1998.
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