Alampay, E., Lacanaria, S., Escano, M., Mamutuk, N. R., & Valera, J. (1987). Methods study on United Industrial Bag Company Inc. College of Engineering.
Chicago Style (17. basım) AtıfAlampay, Erwin, Sofia Lacanaria, Marco Escano, Nattalie R. Mamutuk, ve Jasmin Valera. Methods Study on United Industrial Bag Company Inc. Diliman, Quezon City: College of Engineering, 1987.
MLA (9th ed.) AtıfAlampay, Erwin, et al. Methods Study on United Industrial Bag Company Inc. College of Engineering, 1987.
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