Dyfyniad APA

Heinberg, R. (2009). Blackout: Coal, climate and the last energy crisis. New Society.

Dyfyniad Arddull Chicago

Heinberg, Richard. Blackout: Coal, Climate and the Last Energy Crisis. Gabriola Island, BC: New Society, 2009.

Dyfyniad MLA

Heinberg, Richard. Blackout: Coal, Climate and the Last Energy Crisis. New Society, 2009.

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