Dyfyniad APA

Wringley,E A. (2004). Poverty,progress and population. Cambridge University Press.

Dyfyniad Arddull Chicago

Wringley,E A. Poverty,progress and Population. Great Britain: Cambridge University Press, 2004.

Dyfyniad MLA

Wringley,E A. Poverty,progress and Population. Cambridge University Press, 2004.

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