Guzman, M. K., Alcantara, R. G., Arinto, P. B., Barrios, E. B., Malicsi. Jonathan C., Ocampo, N. S., & Marcial, M. C. D. (1998). Living language: Assessment of language proficiency and needs in the professions and in the workplace. Office of Research Coordination, University of the Philippines.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGuzman, Maybelle Koch, Ruby G. Alcantara, Patricia B. Arinto, Erniel B. Barrios, Malicsi. Jonathan C., Nilo S. Ocampo, और Ma. Corazon DP Marcial. Living Language: Assessment of Language Proficiency and Needs in the Professions and in the Workplace. Quezon City: Office of Research Coordination, University of the Philippines, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGuzman, Maybelle Koch, et al. Living Language: Assessment of Language Proficiency and Needs in the Professions and in the Workplace. Office of Research Coordination, University of the Philippines, 1998.