Gaya APA

Overbye., J, D, G, A, M, S, S, T. (2011). Power System Analysis and Design and SI Version. (5). USA: Cengage.

Gaya MLA

Overbye., J., Duncan, Glover, And, Mulukutla, S., Sarma,, Thomas. "Power System Analysis and Design and SI Version.". 5 USA: Cengage, 2011. Text.