APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

Science and Mathematics Education Manpower Development Project (SMEMDP) en Merle C. Tan. Sourcebook on Practical Work for Teacher Trainers: High School Earth/environmental Science. Exp'l ed. Diliman, Quezon City: SMEMDP, 1998.

MLA (9e ed.) Bronvermelding

Science and Mathematics Education Manpower Development Project (SMEMDP) en Merle C. Tan. Sourcebook on Practical Work for Teacher Trainers: High School Earth/environmental Science. Exp'l ed. SMEMDP, 1998.