S. A.  Renvoize and Clayton, W. D., ?Classification and evolution of grasses?, in Grass Evolution and Domestication, G. P.  Chapman, Ed. Cambridge: Cambridge University Press, 1992, pp. 3-37.

S. A.  Renvoize and Clayton, W. D., ?Classification and evolution of the grasses?, Submitted.

W. D.  Clayton and Renvoize, S. A., ?A system of classification of the grasses?, in Grass Evultion and Domestication, G. P.  Chapman, Ed. Cambridge: Cambridge University Press, 1992, pp. 338-353.

W. D.  Clayton and Renvoize, S. A., ?A system of classification for the grasses?, pp. 338-353, Submitted.

W. D.  Clayton, ?Gramineae?, in Flowering Plants of the World, V. H.  Heywood, Ed. Mayflower Books, New York, 1978, pp. 285-290.