Hafalla, V. V., Jr. (2013). Emerging methodologies and challenges in engineering education research. University of Baguio Research Journal.
Lua i Stíl Chicago (17ú heag.)Hafalla, Victor V., Jr. "Emerging Methodologies and Challenges in Engineering Education Research." University of Baguio Research Journal 2013.
Lua MLA (9ú heag.)Hafalla, Victor V., Jr. "Emerging Methodologies and Challenges in Engineering Education Research." University of Baguio Research Journal, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.