PARR, E. .. (1987). INDUSTRIAL CONTROL HD BK: TECHNIQUES. INDUSTRIAL PRESS.
Chicago-čujuhus (17. p.)PARR, E .A. INDUSTRIAL CONTROL HD BK: TECHNIQUES. NEW YORK: INDUSTRIAL PRESS, 1987.
MLA-čujuhus (9. p.)PARR, E .A. INDUSTRIAL CONTROL HD BK: TECHNIQUES. INDUSTRIAL PRESS, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.