University of the Philippines Diliman. National Institutes for Science and Mathematics Education Development, Agad, M. L., Mondigo, L., & Punzalan, A. E. (2012). Coffee and chocolate. DZUP.
Chicago-viite (17. p.)University of the Philippines Diliman. National Institutes for Science and Mathematics Education Development, Maria Lourdes Agad, Lolita Mondigo, ja Amelia E. Punzalan. Coffee and Chocolate. Quezon City: DZUP, 2012.
MLA-viite (9. p.)University of the Philippines Diliman. National Institutes for Science and Mathematics Education Development, et al. Coffee and Chocolate. DZUP, 2012.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.