TRUXAL, J. G. (1972). Introductory System Engineering John G. Truxal. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)TRUXAL, John G. Introductory System Engineering John G. Truxal. McGraw-Hill, 1972.
Lua MLA (8ú heag.)TRUXAL, John G. Introductory System Engineering John G. Truxal. McGraw-Hill, 1972.
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