APA (7e ed.) Bronvermelding

Intercom. (1964). Focus on world population. Foreign Policy Association.

Chicago (17e ed.) Bronvermelding

Intercom. Focus on World Population. [New York]: Foreign Policy Association, 1964.

MLA (9e ed.) Bronvermelding

Intercom. Focus on World Population. Foreign Policy Association, 1964.

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