R. S.  Sadasivaiah and Magoon, M. L., ?Cytological and morphological studies of some species and species hybrids in the genus Sorghum?, Canadian Journal Genetics and Cytology, vol. 7, pp. 591-608, 1965.

C.  Hsiao, Wang, R. R. C., and Dewey, D. R., ?Karyotype aanalysis and genomic relationships of 22 ploid diploid species in the tribe Triticeae?, Canadian Journal Genetics and Cytology, vol. 28, pp. 109-120, 1985.

C.  Hsiao, Wang, R. R. C., and Dewey, D. R., ?Karyotype analysis and genome relationships of 22 diploid species in the tribe Triticeae?, Canadian Journal Genetics and Cytology, vol. 28, pp. 109-120, 1986.

W. M.  Bowden, ?Chromosome numbers of seven genera of the Triticeae?, Canadian Journal Genetics and Cytology, vol. 8, pp. 130-136, 1966.