Παραπομπή σε μορφή APA (7η εκδ.)

Castillo, J. C., Dujunco, M. K., Gonzales, P. N., & Luna, B. H. A. (1990). A Systems and procedures study on the UP Health Service. College of Engineering.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Castillo, Joseph C., Mildred K. Dujunco, Pinky N. Gonzales, και Baby Helen A. Luna. A Systems and Procedures Study on the UP Health Service. Diliman, Quezon City: College of Engineering, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Castillo, Joseph C., et al. A Systems and Procedures Study on the UP Health Service. College of Engineering, 1990.