APA (7e ed.) Bronvermelding
Arnold, R. A. (2001). Economics (6th ed.). South-Western College Pub..
Chicago (17e ed.) Bronvermelding
Arnold, Roger A. Economics. 6th ed. Cincinnati, Ohio: South-Western College Pub., 2001.
MLA (9e ed.) Bronvermelding
Arnold, Roger A. Economics. 6th ed. South-Western College Pub., 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.