Nebres, B. F. (1999). Invisible problems in education. IN Commentary [column]. Philippine Daily Inquirer.
Citazione stile Chigago Style (17a edizione)Nebres, Bienvenido F. "Invisible Problems in Education. IN Commentary [column]." Philippine Daily Inquirer 1999.
Citatione MLA (9a ed.)Nebres, Bienvenido F. "Invisible Problems in Education. IN Commentary [column]." Philippine Daily Inquirer, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.