Badillo-Feliciano, J., and M. A. Lugo-López. “Effect of Planting System and Partial Removal of the Epidermis of Cassava Cuttings on Growth Yields and Root Development”. The Journal of Agriculture of the University of Puerto Rico, vol. 60, no. 4, Oct. 1976, pp. 606-11, doi:10.46429/jaupr.v60i4.10505.