1. Al-Yasiri S.A. & D.P. Coyne, 1966. Interspecific hybridization in the genus Phaseolus. Crop Sci. 6: 59–60.
2. Alvarez, M.N., 1980. Effect of interspecific Phaseolus hybrids on biological nitrogen fixation. Ph.D. Diss. Univ. Minnesota, St. Paul.
3. Alvarez M.N., P.D. Ascher & D.W. Davis, 1981. Interspecific hybridization in Euphaseolus through embryo rescue. Hort Science 6: 541–543.
4. Andrade-Aguilar J.A. & M.T. Jackson, 1988. Attempts at interspecific hybridization between Phaseolus vulgaris L. and P. acutifolius. A. Gray using embryo rescue. Plant Breeding 101: 172–180.
5. Baudet J.C., 1977. Origine et classification des especes cultivees du genre Phaseolus. Bul. Soc. Roy. Belg. 110: 65–76.