Ngelangel, C. A., Dalmacion, G. V., & Cordero, C. P. (1994). Introduction to basic health research: Research methods I module. University of the Philippines, College of Medicine, Clinical Epidemiology Unit and the Basic Sciences Department.
Chicago-viite (17. p.)Ngelangel, Corazon A., Godofreda V. Dalmacion, ja Cynthia P. Cordero. Introduction to Basic Health Research: Research Methods I Module. Manila: University of the Philippines, College of Medicine, Clinical Epidemiology Unit and the Basic Sciences Department, 1994.
MLA-viite (9. p.)Ngelangel, Corazon A., et al. Introduction to Basic Health Research: Research Methods I Module. University of the Philippines, College of Medicine, Clinical Epidemiology Unit and the Basic Sciences Department, 1994.