(1977). Control engineering. The Open University.
Chicago-čujuhus (17. p.)Control Engineering. Buckingham: The Open University, 1977.
MLA-čujuhus (9. p.)Control Engineering. The Open University, 1977.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.