Edwards et al., 1990. In: Thacker, P. A.; Kirkwood, R. N. Nontraditional Feed Sources for Use in Swine Production. Butterworth Publishers: 305-314

Edwards, S. A.; Livingstone, R. M., 1990. Potato and potato products. In: Thacker, P. A.; Kirkwood, R. N. Nontraditional Feed Sources for Use in Swine Production. Butterworth Publishers: 305-314