APA (7th ed.) Citation

Watkins, H. M. (1934). Coal and men: An economic and social study of the British & American coalfields. G. Allen & Unwin ltd..

Chicago Style (17th ed.) Citation

Watkins, Harold Mostyn. Coal and Men: An Economic and Social Study of the British & American Coalfields. London: G. Allen & Unwin ltd., 1934.

MLA (9th ed.) Citation

Watkins, Harold Mostyn. Coal and Men: An Economic and Social Study of the British & American Coalfields. G. Allen & Unwin ltd., 1934.