Cita APA (7a ed.)

Castillo, R. (2013). Melatonin, aging and cancer. IN Medical files [column]. Philippine Daily Inquirer.

Cita Chicago Style (17a ed.)

Castillo, Rafael. "Melatonin, Aging and Cancer. IN Medical Files [column]." Philippine Daily Inquirer 2013.

Cita MLA (9a ed.)

Castillo, Rafael. "Melatonin, Aging and Cancer. IN Medical Files [column]." Philippine Daily Inquirer, 2013.