Dyfyniad APA

Townsend,Harry. (1980). Price theory (2nd ed.). Penguin Books.

Dyfyniad Arddull Chicago

Townsend,Harry. Price Theory. 2nd ed. England: Penguin Books, 1980.

Dyfyniad MLA

Townsend,Harry. Price Theory. 2nd ed. Penguin Books, 1980.

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