APA (7 वां संस्करण) प्रशस्ति पत्र

Beltran, A. (2001). A test development research: Liberalism questionnaire. University of the Philippines Diliman Extension Program in Pampanga.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Beltran, Aireen. A Test Development Research: Liberalism Questionnaire. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2001.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Beltran, Aireen. A Test Development Research: Liberalism Questionnaire. University of the Philippines Diliman Extension Program in Pampanga, 2001.