Morgan, T. (1956). Introduction to economics (2d ed.). Prentice-Hall.
Dyfyniad Arddull ChicagoMorgan, Theodore. Introduction to Economics. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1956.
Dyfyniad MLAMorgan, Theodore. Introduction to Economics. 2d ed. Prentice-Hall, 1956.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.