Abrena, J., Endaya, V. C., Tan, L., & Zoleta, Z. (1999). A Feasiblity study on WeldPRO 3000 A Switchmode Welding Machine. College of Engineering.
Citazione stile Chigago Style (17a edizione)Abrena, Jasmin, Victor Carlo Endaya, Lawrence Tan, e Zarah Zoleta. A Feasiblity Study on WeldPRO 3000 A Switchmode Welding Machine. Diliman, Quezon City: College of Engineering, 1999.
Citatione MLA (9a ed.)Abrena, Jasmin, et al. A Feasiblity Study on WeldPRO 3000 A Switchmode Welding Machine. College of Engineering, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.