APA (7e ed.) Bronvermelding
Beardshaw, J., & Brewster, D. (1992). Economics: A student's guide (4th ed.). Pearson education.
Chicago (17e ed.) Bronvermelding
Beardshaw, John, en David Brewster. Economics: A Student's Guide. 4th ed. Harlow: Pearson education, 1992.
MLA (9e ed.) Bronvermelding
Beardshaw, John, en David Brewster. Economics: A Student's Guide. 4th ed. Pearson education, 1992.
Let op: Deze citaties zijn niet altijd 100% accuraat.