Dyfyniad APA

Benestad, R. E. (2010). Solar activity and earth´s climate (Second edition.). Springer.

Dyfyniad Arddull Chicago

Benestad, Rasmus E. Solar Activity and Earth´s Climate. Second edition. Germany: Springer, 2010.

Dyfyniad MLA

Benestad, Rasmus E. Solar Activity and Earth´s Climate. Second edition. Springer, 2010.

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