Buco, G. U., & De Pio, S. A. (2014). Sum: Teeth tales (50th anniversary edition.). University of the Philippines National Institute for Science and Mathematics Education Development (UP NISMED).
Citazione stile Chigago Style (17a edizione)Buco, Gerald U., e Simkin Angelo De Pio. Sum: Teeth Tales. 50th anniversary edition. Quezon City: University of the Philippines National Institute for Science and Mathematics Education Development (UP NISMED), 2014.
Citatione MLA (9a ed.)Buco, Gerald U., e Simkin Angelo De Pio. Sum: Teeth Tales. 50th anniversary edition. University of the Philippines National Institute for Science and Mathematics Education Development (UP NISMED), 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.