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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিUniveristy of the Philippines Diliman. National Institute for Science and Mathematics Education Development Writing Team এবং Lourdes R. Carale. Practical Work in Elementary School Science, Grade 1: A Sourcebook for Teachers. Diliman, Quezon City: UP NISMED, 2001.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিUniveristy of the Philippines Diliman. National Institute for Science and Mathematics Education Development Writing Team এবং Lourdes R. Carale. Practical Work in Elementary School Science, Grade 1: A Sourcebook for Teachers. UP NISMED, 2001.