Cita APA (7a ed.)

Jones, L. (1990). Progress to first certificate. (2nd ed.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Jones, Leo. Progress to First Certificate. 2nd ed. Cambridge: Cambridge University Press, 1990.

Cita MLA (8a ed.)

Jones, Leo. Progress to First Certificate. 2nd ed. Cambridge University Press, 1990.