APA (7 वां संस्करण) प्रशस्ति पत्र

Ordoñez, E. M. (2013). Inventions that actually aid farmers. IN Commentary [column]. Philippine Daily Inquirer.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Ordoñez, Ernesto M. "Inventions That Actually Aid Farmers. IN Commentary [column]." Philippine Daily Inquirer 2013.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Ordoñez, Ernesto M. "Inventions That Actually Aid Farmers. IN Commentary [column]." Philippine Daily Inquirer, 2013.