Buenviaje, A., Concepcion, T. J., Diaz, D. J., & Navarro, J. A. (2002). A Methods engineering study on Siegranz Chem Works Laboratories. College of Engineering.
Lua i Stíl Chicago (17ú heag.)Buenviaje, Arlene, Tatiana Joy Concepcion, David John Diaz, agus Julie Anne Navarro. A Methods Engineering Study on Siegranz Chem Works Laboratories. Diliman, Quezon City: College of Engineering, 2002.
Lua MLA (9ú heag.)Buenviaje, Arlene, et al. A Methods Engineering Study on Siegranz Chem Works Laboratories. College of Engineering, 2002.
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