Truxal, J. G. (1989). Feedback-Automation. Research foundation of State University of New York.
Tohutoru Kātū Chicago (17th ed.)Truxal, John G. Feedback-Automation. Stony Brook: Research foundation of State University of New York, 1989.
Tohutoro MLA (9th ed.)Truxal, John G. Feedback-Automation. Research foundation of State University of New York, 1989.
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