Παραπομπή σε μορφή APA (7η εκδ.)

Carvajal, J., Gorrospe, O., Luisking, R., Medina, N., & Sasing, J. (1991). An improved enlistment system for the College of Engineering. UP College of Engineering.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Carvajal, Joel, Oliver Gorrospe, Ramon Luisking, Nelio Medina, και Jude Sasing. An Improved Enlistment System for the College of Engineering. Quezon City: UP College of Engineering, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Carvajal, Joel, et al. An Improved Enlistment System for the College of Engineering. UP College of Engineering, 1991.