(2002). Visayan warty pigs San Diego Zoo's. Philippine Daily Inquirer.
Cita Chicago (17th ed.)"Visayan Warty Pigs San Diego Zoo's." Philippine Daily Inquirer 2002.
Cita MLA (9th ed.)"Visayan Warty Pigs San Diego Zoo's." Philippine Daily Inquirer, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.