Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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