Dyfyniad APA

Quesada, G. (2003). Today Ecological Guarantees, Yesterday Social Guarantees.

Dyfyniad Arddull Chicago

Quesada, Gabriel. Today Ecological Guarantees, Yesterday Social Guarantees. 2003.

Dyfyniad MLA

Quesada, Gabriel. Today Ecological Guarantees, Yesterday Social Guarantees. 2003.

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