Dayrit, M. M. (2004). Twelve herculean labors: Accomplishments of the Department of Health under the Macapagal-Arroyo administration. Department of Health.
Chicago-referens (17:e uppl.)Dayrit, Manuel M. Twelve Herculean Labors: Accomplishments of the Department of Health Under the Macapagal-Arroyo Administration. Manila: Department of Health, 2004.
MLA-referens (9:e uppl.)Dayrit, Manuel M. Twelve Herculean Labors: Accomplishments of the Department of Health Under the Macapagal-Arroyo Administration. Department of Health, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.