Dyfyniad APA

Halm, G. N. (1968). Economic systems: A comparative analysis (3rd ed.). Holt, Rinehart and Winston.

Dyfyniad Arddull Chicago

Halm, George Nikolaus. Economic Systems: A Comparative Analysis. 3rd ed. New York: Holt, Rinehart and Winston, 1968.

Dyfyniad MLA

Halm, George Nikolaus. Economic Systems: A Comparative Analysis. 3rd ed. Holt, Rinehart and Winston, 1968.

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