Mechanisms. W. H. Freeman and Company. 1979. ISBN 0-7167-0070-0 Paul F. Cook and W.W. Cleland Enzyme kinetics and mechanism Garland Science, 2007 ISBN 0-8153-4140-7
(born 1950) R.E.Clausen – Roy Elwood Clausen (1891–1956) R.E.Cleland – Ralph Erskine Cleland (1892–1971) R.E.Fr. – ロベルト・エリアス・フリース - Robert Elias Fries (1876–1966)