APA

Gower R., . (2005). Grammar in practice 4. Edinburgh: Cambridge University Press.

Chicago

Gower R, . 2005. Grammar in practice 4. Edinburgh: Cambridge University Press.

Harvard

Gower R., . (2005). Grammar in practice 4. Edinburgh: Cambridge University Press.

MLA

Gower R, . Grammar in practice 4. Edinburgh: Cambridge University Press. 2005.