Dicdican, R. Y., Leyva, R. G., Padua, G. O., & Pira, M. C. P. (1993). An Information systems study on Blue Cross Health Care, Inc. College of Engineering.
Cita Chicago (17th ed.)Dicdican, Ruth Y., Ruby Gisela Leyva, George O. Padua, i Ma. Cristina P. Pira. An Information Systems Study on Blue Cross Health Care, Inc. Diliman, Quezon City: College of Engineering, 1993.
Cita MLA (9th ed.)Dicdican, Ruth Y., et al. An Information Systems Study on Blue Cross Health Care, Inc. College of Engineering, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.