National Academy of Engineering (U.S.). (1969). The Process of technological innovation: Symposium sponsored by the National Academy of Engineering, April 24, 1968. National Academy of Sciences.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)National Academy of Engineering (U.S.). The Process of Technological Innovation: Symposium Sponsored by the National Academy of Engineering, April 24, 1968. Washington: National Academy of Sciences, 1969.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)National Academy of Engineering (U.S.). The Process of Technological Innovation: Symposium Sponsored by the National Academy of Engineering, April 24, 1968. National Academy of Sciences, 1969.
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