Cita APA (7th ed.)

Hashemi L. Louise & Thomas B. Barbara. (2009). Grammar for First Certificate: Grammar reference and practice (Reprinted ed.). Cambridge, Cambridge University Press, 2009.

Cita Chicago (17th ed.)

Hashemi L. Louise i Thomas B. Barbara. Grammar for First Certificate: Grammar Reference and Practice. Reprinted ed. Cambridge, Cambridge University Press, 2009, 2009.

Cita MLA (9th ed.)

Hashemi L. Louise i Thomas B. Barbara. Grammar for First Certificate: Grammar Reference and Practice. Reprinted ed. Cambridge, Cambridge University Press, 2009, 2009.