Contreras, V. (2003). Shipping out of 16th-century pottery probed. Philippine Daily Inquirer.
Chicago-referens (17:e uppl.)Contreras, Voltaire. "Shipping Out of 16th-century Pottery Probed." Philippine Daily Inquirer 2003.
MLA-referens (9:e uppl.)Contreras, Voltaire. "Shipping Out of 16th-century Pottery Probed." Philippine Daily Inquirer, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.