Electric Power Research Institute & Eckroad, S. W. (2007). EPRI underground transmission systems reference book (2006 ed.). Electric Power Research Institute.
Citace podle Chicago (17th ed.)Electric Power Research Institute a S. W. Eckroad. EPRI Underground Transmission Systems Reference Book. 2006 ed. Palo Alto, Calif: Electric Power Research Institute, 2007.
Citace podle MLA (9th ed.)Electric Power Research Institute a S. W. Eckroad. EPRI Underground Transmission Systems Reference Book. 2006 ed. Electric Power Research Institute, 2007.
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