Dyfyniad APA

Stonier, A. W. H. (1980). A textbook of economic theory (5th ed.). Pearson education.

Dyfyniad Arddull Chicago

Stonier, Alfred W Hague. A Textbook of Economic Theory. 5th ed. N.Delhi: Pearson education, 1980.

Dyfyniad MLA

Stonier, Alfred W Hague. A Textbook of Economic Theory. 5th ed. Pearson education, 1980.

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