(1992). Kaalaman sa buhay (facts for life). Department of Agriculture (DA) sa pakikipag-ugnayan sa Philippine Information Agency (PIA) at United Nations Children's Fund (UNICEF).
Chicago-referens (17:e uppl.)Kaalaman Sa Buhay (facts for Life). Manila: Department of Agriculture (DA) sa pakikipag-ugnayan sa Philippine Information Agency (PIA) at United Nations Children's Fund (UNICEF), 1992.
MLA-referens (9:e uppl.)Kaalaman Sa Buhay (facts for Life). Department of Agriculture (DA) sa pakikipag-ugnayan sa Philippine Information Agency (PIA) at United Nations Children's Fund (UNICEF), 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.