Ilagan, L. (2005). 'Meningo' to recur every 6-8 years - DOH. Manila Times.
Chicago Style aipamenaIlagan, Laarni. "'Meningo' to Recur Every 6-8 Years - DOH." Manila Times 2005.
MLA aipamenaIlagan, Laarni. "'Meningo' to Recur Every 6-8 Years - DOH." Manila Times, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.