Abarra, G., Baradas, J., De Jesus, E., & Katigbak, C. (2001). Quality control study on Concrete Ventures Group, Inc. College of Engineering.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAbarra, Geraldine, Jennifer Baradas, Eleanor De Jesus, और Cristel Katigbak. Quality Control Study on Concrete Ventures Group, Inc. Diliman, Quezon City: College of Engineering, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAbarra, Geraldine, et al. Quality Control Study on Concrete Ventures Group, Inc. College of Engineering, 2001.
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