APA সাইটেশন

Richards, J. C. (2013). Four corners: Student's book. Cambridge: Cambridge University Press.

শিকাগো স্টাইলে সাইটেশন

Richards, Jack C. Four Corners: Student's Book. Cambridge: Cambridge University Press, 2013.

এমএলএ সাইটেশন

Richards, Jack C. Four Corners: Student's Book. Cambridge: Cambridge University Press, 2013.