1. The early history of flotation can be traced in the following books:-
2. Hoover, T.J. Concentrating Ores by Flotation. Mining Magazine, London, 1912.
3. Rickard, T.A. (Edit.) The Flotation Process. Mining and Scientific Press, San Francisco, 1916.
4. Rickard, T.A.(Edit.) Concentration by Flotation. Wiley and Sons, New York, 1921.
5. Fuerstenau, D.W. (Edit.) Froth Flotation: 50th Anniversary Volume. Amer.Inst. Min. Met Pet. Engrs. New York, 1962.