APA (7 वां संस्करण) प्रशस्ति पत्र

(1999). Creating a youth environmental corps in all katipunan ng kabataan to be known as Green Brigade. Philippine Daily Inquirer.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

"Creating a Youth Environmental Corps in All Katipunan Ng Kabataan to Be Known as Green Brigade." Philippine Daily Inquirer 1999.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

"Creating a Youth Environmental Corps in All Katipunan Ng Kabataan to Be Known as Green Brigade." Philippine Daily Inquirer, 1999.