Cita APA (7th ed.)

Puertollano, A. A. (1976). Writing in engineering. De La Salle University.

Cita Chicago (17th ed.)

Puertollano, Azucena A. Writing in Engineering. Manila: De La Salle University, 1976.

Cita MLA (9th ed.)

Puertollano, Azucena A. Writing in Engineering. De La Salle University, 1976.