Lua APA (7ú heag.)
Hewitson, L., Brown, M., & Ramesh, B. (2004). Practical power systems protection. Elsevier.
Lua i Stíl Chicago (17ú heag.)
Hewitson, Les, Mark Brown, agus Ben Ramesh. Practical Power Systems Protection. New York: Elsevier, 2004.
Lua MLA (9ú heag.)
Hewitson, Les, et al. Practical Power Systems Protection. Elsevier, 2004.
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