Espiritu, E. B. (2003). Why a clear population policy is important. IN Continuum [column]. Manila Times.
Chicago Style aipamenaEspiritu, Edgardo B. "Why a Clear Population Policy Is Important. IN Continuum [column]." Manila Times 2003.
MLA aipamenaEspiritu, Edgardo B. "Why a Clear Population Policy Is Important. IN Continuum [column]." Manila Times, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.