Citazione Stile APA (7a Edizione)

Puertollano, A. A. (1976). Writing in engineering. Textbook Development Committee, De la Salle University.

Citazione stile Chigago Style (17a edizione)

Puertollano, Azucena A. Writing in Engineering. Manila: Textbook Development Committee, De la Salle University, 1976.

Citatione MLA (9a ed.)

Puertollano, Azucena A. Writing in Engineering. Textbook Development Committee, De la Salle University, 1976.