Center, C. C., Almario, V. S., Bigornia, M. L., Almario, E. S., & Martin, P. T. (1991). Student's Philippine almanac. Filway Marketing.
Chicago Style (17th ed.) CitationCenter, Children's Communication, Virgilio S. Almario, Mike L. Bigornia, Emeliana S. Almario, and Perfecto T. Martin. Student's Philippine Almanac. Makati, MM: Filway Marketing, 1991.
MLA (9th ed.) CitationCenter, Children's Communication, et al. Student's Philippine Almanac. Filway Marketing, 1991.
Warning: These citations may not always be 100% accurate.