Stehmann, M. & Vergara, R. (1978)
Myliobatidae (6 pp.) In FISCHER, W.(Ed.): FAO species identification sheets for fishery purposes. Western Central Atlantic(Fishing area 31), vol. 5. FAO Rome 1978(7 vols).
Stehmann, M. & McEachran, J.D. & Vergara, R. (1978)
Dasyatidae (8 pp.) In FISCHER, W.(Ed.): FAO species identification sheets for fishery purposes. Western Central Atlantic(Fishing area 31), vol. 5. FAO Rome 1978(7 vols).