Cita APA

Frankel, I., & Irene Frankel. (1998). Gateways: Integrated english. New York, NY, USA: Oxford University Press.

Chicago Style Citation

Frankel, Irene, i Irene Frankel. Gateways: Integrated English. New York, NY, USA: Oxford University Press, 1998.

Cita MLA

Frankel, Irene, i Irene Frankel. Gateways: Integrated English. New York, NY, USA: Oxford University Press, 1998.

Atenció: Aquestes cites poden no estar 100% correctes.