De Vera, A. F., Wang, T., & Traya, L. A. (1992). An Information system study of the SPMO Procurement Section. College of Engineering.
芝加哥风格引文De Vera, Augusto Francis, Ting Wang, 与 Lloyd Apollo Traya. An Information System Study of the SPMO Procurement Section. Diliman, Quezon City: College of Engineering, 1992.
MLA引文De Vera, Augusto Francis, et al. An Information System Study of the SPMO Procurement Section. College of Engineering, 1992.
警告：这些引文格式不一定是100％准确.