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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Carabacan, Balie N., Oliver James S. Dulay, Aaron Jairo Z. Oblena, Maria Margarita M. Samson, و 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.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)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.