Dyfyniad APA

Mitchell, J. (2005). Personal commentary. Oxford Institute for Energy Studies.

Dyfyniad Arddull Chicago

Mitchell, J. Personal Commentary. Oxford Institute for Energy Studies, 2005.

Dyfyniad MLA

Mitchell, J. Personal Commentary. Oxford Institute for Energy Studies, 2005.

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