Dy, G. G., Manuel, J. J. M., & Velasquez, G. D. (2003). A Production operations management study on Four Dimension Sleep Products Manufacturing Corporation. College of Engineering.
Čikaški stil citiranja (17. izdanje)Dy, Glady G., Jelle Jasmin M. Manuel, i Gabriel D. Velasquez. A Production Operations Management Study on Four Dimension Sleep Products Manufacturing Corporation. Diliman, Quezon City: College of Engineering, 2003.
MLA način citiranja (9. izdanje)Dy, Glady G., et al. A Production Operations Management Study on Four Dimension Sleep Products Manufacturing Corporation. College of Engineering, 2003.
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