1. International Code of Nomenclature for Cultivated Plants;Brickell;Regnum Vegetabile,1980
2. Het Geslacht Dracaena onder de Loupe;Graven;Vakblad voor de Bloemisterij,1990
3. Dracaena in West Africa;Bos;Agric. Univ. Wag. Papers,1984
4. Brandenburg W.A. , Oost E.H. , & Van De Vooren J.G. , (1982). Taxonomic aspects of the germplasm conservation of cross-pollinated cultivated plants. In Porceddu E. & Jenkins G. (eds), Proc. of the C.E.P.I Eucarpia Seminar Seed Regeneration in Cross-pollinated Species (1981): 33–41.
5. CULTIVAR GROUPING IN RELATION TO THE INTERNATIONAL CODE OF NOMENCLATURE FOR CULTIVATED PLANTS