Cita APA (7a ed.)

HEWINGS, A., & HEWINGS, M. (2005). Grammar and context: An advanced resource book. Routledge.

Cita Chicago Style (17a ed.)

HEWINGS, Ann, y Martin HEWINGS. Grammar and Context: An Advanced Resource Book. London: Routledge, 2005.

Cita MLA (9a ed.)

HEWINGS, Ann, y Martin HEWINGS. Grammar and Context: An Advanced Resource Book. Routledge, 2005.