Randel, Paul F. “A Comparison of Blackstrap Molasses Fortified With Soybean Oilmeal and a Conventional Concentrate Mixture As a Supplement for Growing Heifers Fed Fair-Quality Forage”. The Journal of Agriculture of the University of Puerto Rico, vol. 51, no. 2, Apr. 1967, pp. 121-32, doi:10.46429/jaupr.v51i2.11460.