Keller, K.(2010).Electrical safety code manual: a plain language guide to national electrical code, OSHA, and NFPA 7OE (-).(4) Organisasi Perusahaan: Teo:Yayasan Kita Menulis.
Gaya MLA
Keller, K..Electrical safety code manual: a plain language guide to national electrical code, OSHA, and NFPA 7OE.-(4) Organisasi Perusahaan: Teo:Yayasan Kita Menulis,2010.Text.