Cita APA (7th ed.)

Tan, R. R., & Culaba, A. B. (2002). Life-cycle environmental benefits of using bioethanol as a gasoline additive. Philippine Engineering Journal.

Cita Chicago (17th ed.)

Tan, Raymond R., i Alvin B. Culaba. "Life-cycle Environmental Benefits of Using Bioethanol as a Gasoline Additive." Philippine Engineering Journal 2002.

Cita MLA (9th ed.)

Tan, Raymond R., i Alvin B. Culaba. "Life-cycle Environmental Benefits of Using Bioethanol as a Gasoline Additive." Philippine Engineering Journal, 2002.