Dyfyniad APA

Economics & society. Center for Research and Communication.

Dyfyniad Arddull Chicago

Economics & Society. Pasig, Metro Manila: Center for Research and Communication.

Dyfyniad MLA

Economics & Society. Center for Research and Communication.

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