APA (7 वां संस्करण) प्रशस्ति पत्र

Ocampo, A. R. (2005). So much history in one hospital. IN Looking back [column]. Philippine Daily Inquirer.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Ocampo, Ambeth R. "So Much History in One Hospital. IN Looking Back [column]." Philippine Daily Inquirer 2005.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Ocampo, Ambeth R. "So Much History in One Hospital. IN Looking Back [column]." Philippine Daily Inquirer, 2005.