Παραπομπή σε μορφή APA (7η εκδ.)

De Vera, A. F., Wang, T., & Traya, L. A. (1992). An Information system study of the SPMO Procurement Section. College of Engineering.

Παραπομπή σε μορφή Chicago (17η εκδ.)

De Vera, Augusto Francis, Ting Wang, και Lloyd Apollo Traya. An Information System Study of the SPMO Procurement Section. Diliman, Quezon City: College of Engineering, 1992.

Παραπομπή σε μορφή MLA (9th εκδ.)

De Vera, Augusto Francis, et al. An Information System Study of the SPMO Procurement Section. College of Engineering, 1992.