Gopez, A. J. R., & Alcantar, L. A. (1991). Technical note: Philippine country report: welding, metal forming and metal casting sector. Philippine Engineering Journal.
Citazione stile Chigago Style (17a edizione)Gopez, Adolfo Jesus R., e Leonardo A. Alcantar. "Technical Note: Philippine Country Report: Welding, Metal Forming and Metal Casting Sector." Philippine Engineering Journal 1991.
Citatione MLA (9a ed.)Gopez, Adolfo Jesus R., e Leonardo A. Alcantar. "Technical Note: Philippine Country Report: Welding, Metal Forming and Metal Casting Sector." Philippine Engineering Journal, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.