APA (7e ed.) Bronvermelding

(1990). The government and economic systems. Society for Visual Education, Inc.

Chicago (17e ed.) Bronvermelding

The Government and Economic Systems. Chicago, Ill: Society for Visual Education, Inc, 1990.

MLA (9e ed.) Bronvermelding

The Government and Economic Systems. Society for Visual Education, Inc, 1990.

Let op: Deze citaties zijn niet altijd 100% accuraat.