Dyfyniad APA

Thin, N. (2002). Social progress and sustainable development. Kumarian Press.

Dyfyniad Arddull Chicago

Thin, Neil. Social Progress and Sustainable Development. Bloomfield, CT: Kumarian Press, 2002.

Dyfyniad MLA

Thin, Neil. Social Progress and Sustainable Development. Kumarian Press, 2002.

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