Science and Mathematics Education Manpower Development Project (SMEMDP) & Tan, M. C. (1998). Sourcebook on practical work for teacher trainers: High school earth/environmental science (Exp'l ed.). SMEMDP.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रScience and Mathematics Education Manpower Development Project (SMEMDP) और Merle C. Tan. Sourcebook on Practical Work for Teacher Trainers: High School Earth/environmental Science. Exp'l ed. Diliman, Quezon City: SMEMDP, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रScience and Mathematics Education Manpower Development Project (SMEMDP) और Merle C. Tan. Sourcebook on Practical Work for Teacher Trainers: High School Earth/environmental Science. Exp'l ed. SMEMDP, 1998.
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