Jawaharlal Nehru, M. Chalapathi Rau, H. Y. Sharada Prasad, Bal Ram Nanda (1972). “Selected Works of Jawaharlal Nehru: Advisory Board: M. Chalapathi Rau, H. Y. Sharada Prasad, and B. R. Nanda; General Editor: S. Gopal”
"The Impact of Labour, 1920-1924: The Beginnings of Modern British Politics" by Maurice Cowling, Cambridge: Cambridge University Press, (p. 181), 1971.