Cita APA

Harrison, M., & Kerr, R. (1997). First certificate practice tests. New York: Oxford University Press.

Chicago Style Citation

Harrison, Mark., i Rosalie Kerr. First Certificate Practice Tests. New York: Oxford University Press, 1997.

Cita MLA

Harrison, Mark., i Rosalie Kerr. First Certificate Practice Tests. New York: Oxford University Press, 1997.