Não informado. (2003). Electrical Contracting and Maintenance. Hugh C. Maclean Publications.
Chicago (17e ed.) BronvermeldingNão informado. Electrical Contracting and Maintenance. Ontario, Canada: Hugh C. Maclean Publications, 2003.
MLA (8e ed.) BronvermeldingNão informado. Electrical Contracting and Maintenance. Hugh C. Maclean Publications, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.