Morgan, T. (1956). Introduction to economics (2d ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Morgan, Theodore. Introduction to Economics. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1956.
Lua MLA (9ú heag.)Morgan, Theodore. Introduction to Economics. 2d ed. Prentice-Hall, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.