Caldez, E. (2003). 17-year old Cagayan student invents remote thermometer. Philippine Daily Inquirer.
Chicago-viite (17. p.)Caldez, Estanislao. "17-year Old Cagayan Student Invents Remote Thermometer." Philippine Daily Inquirer 2003.
MLA-viite (9. p.)Caldez, Estanislao. "17-year Old Cagayan Student Invents Remote Thermometer." Philippine Daily Inquirer, 2003.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.