(1999). Field health service information system: Annual report 1999. National Epidemiology Center, Department of Health.
Chicago Style aipamenaField Health Service Information System: Annual Report 1999. Manila: National Epidemiology Center, Department of Health, 1999.
MLA aipamenaField Health Service Information System: Annual Report 1999. National Epidemiology Center, Department of Health, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.