Cita APA (7a ed.)

Grammidge, M. (2002). Grammar Works: Student´s book . (1a. ed.). Cambridge, University Press.

Cita Chicago Style (17a ed.)

Grammidge, Mick. Grammar Works: Student´s Book . 1a. ed. New York , E. U: Cambridge, University Press, 2002.

Cita MLA (9a ed.)

Grammidge, Mick. Grammar Works: Student´s Book . 1a. ed. Cambridge, University Press, 2002.