Truxal, J. G. (1989). Feedback-Automation. Research foundation of State University of New York.
Chicago-čujuhus (17. p.)Truxal, John G. Feedback-Automation. Stony Brook: Research foundation of State University of New York, 1989.
MLA-čujuhus (9. p.)Truxal, John G. Feedback-Automation. Research foundation of State University of New York, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.