Schenck, H. v. N. (1968). Theories of engineering experimentation (2nd ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Schenck, Hilbert van Nydeck. Theories of Engineering Experimentation. 2nd ed. New York: McGraw-Hill, 1968.
Lua MLA (9ú heag.)Schenck, Hilbert van Nydeck. Theories of Engineering Experimentation. 2nd ed. McGraw-Hill, 1968.
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