Univeristy of the Philippines Diliman. National Institute for Science and Mathematics Education Development Writing Team & Carale, L. R. (2001). Practical work in elementary school science, grade 1: A sourcebook for teachers. UP NISMED.
Παραπομπή σε μορφή Chicago (17η εκδ.)Univeristy of the Philippines Diliman. National Institute for Science and Mathematics Education Development Writing Team και Lourdes R. Carale. Practical Work in Elementary School Science, Grade 1: A Sourcebook for Teachers. Diliman, Quezon City: UP NISMED, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)Univeristy of the Philippines Diliman. National Institute for Science and Mathematics Education Development Writing Team και Lourdes R. Carale. Practical Work in Elementary School Science, Grade 1: A Sourcebook for Teachers. UP NISMED, 2001.