APA (7th ed.) Zitazioa
United Nations Population Fund. (1998). The state of world population: The new generations. UNFPA.
Chicago Style (17th ed.) Zitazioa
United Nations Population Fund. The State of World Population: The New Generations. New York: UNFPA, 1998.
MLA (9th ed.) Zitazioa
United Nations Population Fund. The State of World Population: The New Generations. UNFPA, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.