Cita APA (7a ed.)
Beardshaw, J., & Brewster, D. (1992). Economics: A student's guide (4th ed.). Pearson education.
Cita Chicago Style (17a ed.)
Beardshaw, John, y David Brewster. Economics: A Student's Guide. 4th ed. Harlow: Pearson education, 1992.
Cita MLA (9a ed.)
Beardshaw, John, y David Brewster. Economics: A Student's Guide. 4th ed. Pearson education, 1992.
Precaución: Estas citas no son 100% exactas.