Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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