Luy, D. M., Parreño, K., & Salvatierra, M. R. (2000). A methods engineering study on Grist Chemicals Marketing. College of Engineering.
Chicago-referens (17:e uppl.)Luy, Don Mark, Kristin Parreño, och Michelle Ra Salvatierra. A Methods Engineering Study on Grist Chemicals Marketing. Diliman, Quezon City: College of Engineering, 2000.
MLA-referens (9:e uppl.)Luy, Don Mark, et al. A Methods Engineering Study on Grist Chemicals Marketing. College of Engineering, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.