Thomas B. Barbara, Hashemi L. Louise, & Matthews L. Laura. (2015). Grammar and Vocabulary for First and First for Schools. With answers. Cambridge, Cambridge University Press, 2015.
Chicago-referens (17:e uppl.)Thomas B. Barbara, Hashemi L. Louise, och Matthews L. Laura. Grammar and Vocabulary for First and First for Schools. With Answers. Cambridge, Cambridge University Press, 2015, 2015.
MLA-referens (9:e uppl.)Thomas B. Barbara, et al. Grammar and Vocabulary for First and First for Schools. With Answers. Cambridge, Cambridge University Press, 2015, 2015.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.