Houpis, C. H. (1992). Digital contral systems: theory: Hardware, software. McGraw-Hill.
Chicago-čujuhus (17. p.)Houpis, Constantine H. Digital Contral Systems: Theory: Hardware, Software. New York: McGraw-Hill, 1992.
MLA-čujuhus (9. p.)Houpis, Constantine H. Digital Contral Systems: Theory: Hardware, Software. McGraw-Hill, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.