Dyfyniad APA

Bennett, G., Newman, P., & Polydor, A. (2015). Letter of reply. Oxford Institute for Energy Studies.

Dyfyniad Arddull Chicago

Bennett, G., P. Newman, and A. Polydor. Letter of Reply. Oxford Institute for Energy Studies, 2015.

Dyfyniad MLA

Bennett, G., et al. Letter of Reply. Oxford Institute for Energy Studies, 2015.

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