Citazione Stile APA (7a Edizione)

Lock, G. (1996). Functional English grammar: An introduction for second language teachers. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Lock, Graham. Functional English Grammar: An Introduction for Second Language Teachers. Cambridge ; New York: Cambridge University Press, 1996.

Citatione MLA (8a ed.)

Lock, Graham. Functional English Grammar: An Introduction for Second Language Teachers. Cambridge University Press, 1996.