Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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