(1998). Total world population: 6B in 1999. Manila Times.
Chicago Style (17th ed.) Citation"Total World Population: 6B in 1999." Manila Times 1998.
MLA (9th ed.) Citation"Total World Population: 6B in 1999." Manila Times, 1998.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.