Harper, B. L. (1999). About those ruins. IN Sense and sensibility [column]. Philippine Daily Inquirer.
Chicago-referens (17:e uppl.)Harper, Bambi Lammoglia. "About Those Ruins. IN Sense and Sensibility [column]." Philippine Daily Inquirer 1999.
MLA-referens (9:e uppl.)Harper, Bambi Lammoglia. "About Those Ruins. IN Sense and Sensibility [column]." Philippine Daily Inquirer, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.