Cita APA

Harrison, M., & Kerr, R. (1996). First certificate practice tests. New York: Oxford University Press.

Citación estilo Chicago

Harrison, Mark., y Rosalie Kerr. First Certificate Practice Tests. New York: Oxford University Press, 1996.

Cita MLA

Harrison, Mark., y Rosalie Kerr. First Certificate Practice Tests. New York: Oxford University Press, 1996.