Carabacan, B. N., Dulay, O. J. S., Oblena, A. J. Z., Samson, M. M. M., & Timbang, A. A. B. (2018). Project O.H.S (Operational policy, healthy workplace and standadized services). Department of environmental and Occupational Health, College of Public Health, University of the Philippines Manila.
Chicago-referens (17:e uppl.)Carabacan, Balie N., Oliver James S. Dulay, Aaron Jairo Z. Oblena, Maria Margarita M. Samson, och Aileen A. Benitez Timbang. Project O.H.S (Operational Policy, Healthy Workplace and Standadized Services). Manila: Department of environmental and Occupational Health, College of Public Health, University of the Philippines Manila, 2018.
MLA-referens (9:e uppl.)Carabacan, Balie N., et al. Project O.H.S (Operational Policy, Healthy Workplace and Standadized Services). Department of environmental and Occupational Health, College of Public Health, University of the Philippines Manila, 2018.