Dyfyniad APA

Sundar I. (2014). Principles of energy economics. Sarup books.

Dyfyniad Arddull Chicago

Sundar I. Principles of Energy Economics. New Delhi: Sarup books, 2014.

Dyfyniad MLA

Sundar I. Principles of Energy Economics. Sarup books, 2014.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.