Kress, W.J. & Specht, C.D. 2005. Between Cancer and Capricorn: Phylogeny, evolution and ecology of the primarily tropical Zingiberales. Biol. Skr. 55: 459-478. ISSN 0366-3612. ISBN 87-7304- 304-4. [Pp. 459-478, en Friis, I., y Balslev, H. (eds), Proceedings of a Symposium on Plant Diversity and Complexity Patterns - Local, Regional and Global Dimensions. Danish Academy of Sciences and Letters, Copenhagen.] http://spechtlab.berkeley.edu/sites/default/files/spechtlab/publications/12%20Kress%20and%20Specht%202005.pdfArchivado el 30 de diciembre de 2017 en Wayback Machine.
Kress, W. J. (1990). The phylogeny and classification of the Zingiberales. Annals of the Missouri Botanical Garden, 698-721. http://www.jstor.org/stable/2399669
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Kress, W.J. & Specht, C.D. 2005. Between Cancer and Capricorn: Phylogeny, evolution and ecology of the primarily tropical Zingiberales. Biol. Skr. 55: 459-478. ISSN 0366-3612. ISBN 87-7304- 304-4. [Pp. 459-478, en Friis, I., y Balslev, H. (eds), Proceedings of a Symposium on Plant Diversity and Complexity Patterns - Local, Regional and Global Dimensions. Danish Academy of Sciences and Letters, Copenhagen.] http://spechtlab.berkeley.edu/sites/default/files/spechtlab/publications/12%20Kress%20and%20Specht%202005.pdfArchivado el 30 de diciembre de 2017 en Wayback Machine.