Παραπομπή APA

Murphy, R. (1992). Essential Englsih Grammar (2 nd.). Cambrdge University Press.

Παραπομπή Chicago Style

Murphy, Raymond. Essential Englsih Grammar. 2 nd. New Delhi: Cambrdge University Press, 1992.

Παραπομπή MLA

Murphy, Raymond. Essential Englsih Grammar. 2 nd. Cambrdge University Press, 1992.