APA

Gairns R., . (2008). Oxford word skills. İngiltere: Oxford University Press.

Chicago

Gairns Ruth, . 2008. Oxford word skills. İngiltere: Oxford University Press.

Harvard

Gairns R., . (2008). Oxford word skills. İngiltere: Oxford University Press.

MLA

Gairns Ruth, . Oxford word skills. İngiltere: Oxford University Press. 2008.