Cita APA (7a ed.)
Ruffin, R. j., & Gregory, P. R. (1986). Principles of macroeconomics (2nd ed.). Scott, Foresman.
Cita Chicago Style (17a ed.)
Ruffin, Roy j., y Paul R. Gregory. Principles of Macroeconomics. 2nd ed. Glenview, Illinois: Scott, Foresman, 1986.
Cita MLA (9a ed.)
Ruffin, Roy j., y Paul R. Gregory. Principles of Macroeconomics. 2nd ed. Scott, Foresman, 1986.
Precaución: Estas citas no son 100% exactas.