Barro, J. B., Chu, M. R. B., & Claridad, M. L. B. V. (1999). A Methods engineering study on JY Ceramics. College of Engineering.
Cita Chicago (17th ed.)Barro, Jesselyn B., Ma. Rosario B. Chu, i Ma. Lourdes Bernadette V. Claridad. A Methods Engineering Study on JY Ceramics. Diliman, Quezon City: College of Engineering, 1999.
Cita MLA (9th ed.)Barro, Jesselyn B., et al. A Methods Engineering Study on JY Ceramics. College of Engineering, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.