Castillo, R. (2017). Sudoku, mahjong, video games can all help keep your mind young. IN MEdical Files [column]. Philippine Daily Inquirer.
Cita Chicago (17th ed.)Castillo, Rafael. "Sudoku, Mahjong, Video Games Can All Help Keep Your Mind Young. IN MEdical Files [column]." Philippine Daily Inquirer 2017.
Cita MLA (9th ed.)Castillo, Rafael. "Sudoku, Mahjong, Video Games Can All Help Keep Your Mind Young. IN MEdical Files [column]." Philippine Daily Inquirer, 2017.
Atenció: Aquestes cites poden no estar 100% correctes.