Curriculum Development Center for Science, Science Education Center, University of the Philippines. (1977). Elementary school science 1: Things around us. Department of Education and Culture, Republic of the Philippines.
Lua i Stíl Chicago (17ú heag.)Curriculum Development Center for Science, Science Education Center, University of the Philippines. Elementary School Science 1: Things Around Us. Manila: Department of Education and Culture, Republic of the Philippines, 1977.
Lua MLA (9ú heag.)Curriculum Development Center for Science, Science Education Center, University of the Philippines. Elementary School Science 1: Things Around Us. Department of Education and Culture, Republic of the Philippines, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.