Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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