Koen, B. V. (1985). Definition of the engineering method. American Society for Engineering Education.
Citace podle Chicago (17th ed.)Koen, Billy Vaughn. Definition of the Engineering Method. Washington, D.C: American Society for Engineering Education, 1985.
Citace podle MLA (9th ed.)Koen, Billy Vaughn. Definition of the Engineering Method. American Society for Engineering Education, 1985.
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