Morgan, T. (1956). Introduction to economics (2d ed.). Prentice-Hall.
Chicago-čujuhus (17. p.)Morgan, Theodore. Introduction to Economics. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1956.
MLA-čujuhus (9. p.)Morgan, Theodore. Introduction to Economics. 2d ed. Prentice-Hall, 1956.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.