Claudio, K. R., De Guzman, E. F., Maneja, R. G. G., & Ruiz, D. R. S. (1998). A Quality control study on Philippine Electric Corporation. College of Engineering.
Lua i Stíl Chicago (17ú heag.)Claudio, Kristine R., Elaine F. De Guzman, Renee Geraldine G. Maneja, agus Dida Rowena S. Ruiz. A Quality Control Study on Philippine Electric Corporation. Diliman, Quezon City: College of Engineering, 1998.
Lua MLA (9ú heag.)Claudio, Kristine R., et al. A Quality Control Study on Philippine Electric Corporation. College of Engineering, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.