Reyes, V. A. R & D Imperatives in Manufacturing. Philippine Engineering Journal.
Citazione stile Chigago Style (17a edizione)Reyes, Valentin A. "R & D Imperatives in Manufacturing." Philippine Engineering Journal .
Citatione MLA (9a ed.)Reyes, Valentin A. "R & D Imperatives in Manufacturing." Philippine Engineering Journal, .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.