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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUniveristy of the Philippines Diliman. National Institute for Science and Mathematics Education Development Writing Team और Lourdes R. Carale. Practical Work in Elementary School Science, Grade 1: A Sourcebook for Teachers. Diliman, Quezon City: UP NISMED, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUniveristy of the Philippines Diliman. National Institute for Science and Mathematics Education Development Writing Team और Lourdes R. Carale. Practical Work in Elementary School Science, Grade 1: A Sourcebook for Teachers. UP NISMED, 2001.