Cita APA (7a ed.)

Harrison, M., & Kerr, R. (2002). BEC Higher: Practice tests : lower intermediate. Oxford University Press.

Cita Chicago Style (17a ed.)

Harrison, Mark, y Rosalie Kerr. BEC Higher: Practice Tests : Lower Intermediate. Oxford: Oxford University Press, 2002.

Cita MLA (9a ed.)

Harrison, Mark, y Rosalie Kerr. BEC Higher: Practice Tests : Lower Intermediate. Oxford University Press, 2002.