Common Poisonous Plants- https://aggie-horticulture.tamu.edu/earthkind/landscape/poisonous-plants-resources/common-poisonous-plants-and-plant-parts/
Toxic Rangeland Plants- https://rangeplants.tamu.edu/collection/toxics/
Toxic Plants of Texas – Hart, Barr, Garland, Carpenter, Reagor, Texas Cooperative Extension, 2004