Cita APA (7a ed.)

Arguillas, C. O. (1998). Blackmail. IN Letter from Mindanao [column]. Philippine Daily Inquirer.

Cita Chicago Style (17a ed.)

Arguillas, Carolyn O. "Blackmail. IN Letter from Mindanao [column]." Philippine Daily Inquirer 1998.

Cita MLA (9a ed.)

Arguillas, Carolyn O. "Blackmail. IN Letter from Mindanao [column]." Philippine Daily Inquirer, 1998.