Caoyonan, L. A. T., De Leon, I. R., & Musngi, C. V. C. (2000). A Project Study on the product, Scented Oil with Insect Repellant. College of Engineering.
Chicago-referens (17:e uppl.)Caoyonan, Lizelle Anne T., Irene R. De Leon, och Cherrie Vi C. Musngi. A Project Study on the Product, Scented Oil with Insect Repellant. Diliman, Quezon City: College of Engineering, 2000.
MLA-referens (9:e uppl.)Caoyonan, Lizelle Anne T., et al. A Project Study on the Product, Scented Oil with Insect Repellant. College of Engineering, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.