(1998). U.N. predicts world population to settle at 11 billion by 2000. Manila Bulletin.
Chicago (17e ed.) Bronvermelding"U.N. Predicts World Population to Settle at 11 Billion by 2000." Manila Bulletin 1998.
MLA (9e ed.) Bronvermelding"U.N. Predicts World Population to Settle at 11 Billion by 2000." Manila Bulletin, 1998.
Let op: Deze citaties zijn niet altijd 100% accuraat.