Alcaraz, F., Carrión, J. and Sánchez Gómez, P. 1987. Gutierrezia dracunculoides (DC.) Blake (Compositae), new species to the Iberian Peninsula. Acta Botanica Malacitana. 12, (Dec. 1987), 242–245. DOI:https://doi.org/10.24310/Actabotanicaabmabm.v12i.9764.