Citazione Stile APA (7a Edizione)

Protacio, A. L. (1997). Bangungot still an enigma. IN Doctor's corner [column]. Philippine Daily Inquirer.

Citazione stile Chigago Style (17a edizione)

Protacio, Antonio L. "Bangungot Still an Enigma. IN Doctor's Corner [column]." Philippine Daily Inquirer 1997.

Citatione MLA (9a ed.)

Protacio, Antonio L. "Bangungot Still an Enigma. IN Doctor's Corner [column]." Philippine Daily Inquirer, 1997.