Philippines. Department of Education, Culture and Sports. Research and Statistics Division. Office of the Planning Service. (1990). Basic education statistics: SY 1985-1986 to SY 1989-1990. Research and Statistics Division, Office of the Planning Service.
Cita Chicago (17th ed.)Philippines. Department of Education, Culture and Sports. Research and Statistics Division. Office of the Planning Service. Basic Education Statistics: SY 1985-1986 to SY 1989-1990. Pasig, Metro Manila: Research and Statistics Division, Office of the Planning Service, 1990.
Cita MLA (9th ed.)Philippines. Department of Education, Culture and Sports. Research and Statistics Division. Office of the Planning Service. Basic Education Statistics: SY 1985-1986 to SY 1989-1990. Research and Statistics Division, Office of the Planning Service, 1990.