Harahap,rusli. Mesin listrik mesin arus searah. Gramedia.
Chicago Style (17th ed.) CitationHarahap,rusli. Mesin Listrik Mesin Arus Searah. Gramedia.
MLA (8th ed.) CitationHarahap,rusli. Mesin Listrik Mesin Arus Searah. Gramedia.
Warning: These citations may not always be 100% accurate.