Citazione APA

Singh, S., & Singh, B. (2012). Grammar of the modern english language: A resource book. Cambridge University Press.

Stile di citazione Chicago

Singh, Sukhdev, e Balbir Singh. Grammar of the Modern English Language: A Resource Book. New Delhi: Cambridge University Press, 2012.

Citazione MLA

Singh, Sukhdev, e Balbir Singh. Grammar of the Modern English Language: A Resource Book. Cambridge University Press, 2012.