Dyfyniad APA

Alfred Marshall. (2010). Principles of economics. Atlantic Publisher.

Dyfyniad Arddull Chicago

Alfred Marshall. Principles of Economics. New Delhi: Atlantic Publisher, 2010.

Dyfyniad MLA

Alfred Marshall. Principles of Economics. Atlantic Publisher, 2010.

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