Morales, Abad, et al. “Determinate Pigeon Pea [Cajanus Cajan (L) Millsp] Genotypes on the North and South Coasts of Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico, vol. 72, no. 4, Oct. 1988, pp. 545-56, doi:10.46429/jaupr.v72i4.8003.