El-Sharkawi, Mohamed A.
Electric energy : an introduction
CRC Press, Taylor & Francis Group, 2009
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Electric energy systems : analysis and operation
edited by Antonio Gomez-Exposito, Antonio Conejo and Claudio Canizares
CRC Press, 2009
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Energy decisions for the next decade / Edison Electric Institute
Chicago, Illinois Edison Electric Institute 1980.,
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Keith, Lyman A.
Business management
McGraw-Hill, 1958
 Buku Teks
Shubin, John A.
Business management
Barnes & Noble, 1975
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