Dyfyniad APA
Wrigley, E. (2004). Poverty, progress and population. Cambridge University Press.
Dyfyniad Arddull Chicago
Wrigley, E.A. Poverty, Progress and Population. Cambridge: Cambridge University Press, 2004.
Dyfyniad MLA
Wrigley, E.A. Poverty, Progress and Population. Cambridge University Press, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.