Roll, E. (1956). A history of economic thought (3rd ed.). Prentice-Hall.
Cita Chicago Style (17a ed.)Roll, Erich. A History of Economic Thought. 3rd ed. Englewood Cliffs: Prentice-Hall, 1956.
Cita MLA (9a ed.)Roll, Erich. A History of Economic Thought. 3rd ed. Prentice-Hall, 1956.
Precaución: Estas citas no son 100% exactas.