Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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