APA (7th ed.) Citation

Plumb, J. H. (1951). G. M. Trevelyan. Published for the British Council by Longmans, Green.

Chicago Style (17th ed.) Citation

Plumb, J. H. G. M. Trevelyan. London, New York: Published for the British Council by Longmans, Green, 1951.

MLA (9th ed.) Citation

Plumb, J. H. G. M. Trevelyan. Published for the British Council by Longmans, Green, 1951.