Gupta, H.C. and S.G. Telang. Business Communication. Wisdom Publications, 2009.
Hooper, J.S. A Quick English Reference. OUP, 1981.
Mathew, M.J. Business Communication. RBSA Publishers, 2002.
Quirk, Randolph, and Sidney Greenbaum. A University Grammar of English. Orient Longman, 1973.
Raman, Meenakshi. Business Communication. OUP, 2006.
Shrikhande, Rajan. Business Communication and Executive Effectiveness. Symbiosis Centre for Distance Learning, 2004.
Thomson A.J and A.V. Martinet. A Practical English Grammar. OUP, 1997.