Mangahas, M. (2009). Can measuring happiness make people happy? Philippine Daily Inquirer.
Citazione stile Chigago Style (17a edizione)Mangahas, Mahar. "Can Measuring Happiness Make People Happy?" Philippine Daily Inquirer 2009.
Citatione MLA (9a ed.)Mangahas, Mahar. "Can Measuring Happiness Make People Happy?" Philippine Daily Inquirer, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.