Dyfyniad APA

.Abbasi, S., & abbasi, n. (2005). Renewable energy sources and their environmental impact. Prentice Hall.

Dyfyniad Arddull Chicago

.Abbasi, S.A, and naseema abbasi. Renewable Energy Sources and Their Environmental Impact. New delhi: Prentice Hall, 2005.

Dyfyniad MLA

.Abbasi, S.A, and naseema abbasi. Renewable Energy Sources and Their Environmental Impact. Prentice Hall, 2005.

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