Science and Mathematics Education Manpower Development Project (SMEMDP). (2000). Sourcebook on practical work for teacher trainers: Elementary school science, vol.2. SMEMDP.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रScience and Mathematics Education Manpower Development Project (SMEMDP). Sourcebook on Practical Work for Teacher Trainers: Elementary School Science, Vol.2. Diliman, Quezon City: SMEMDP, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्रScience and Mathematics Education Manpower Development Project (SMEMDP). Sourcebook on Practical Work for Teacher Trainers: Elementary School Science, Vol.2. SMEMDP, 2000.
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