Sadigh-Eteghad S, khayat-Nuri H, Abadi N, Ghavami S, Golabi M, Shanebandi D (2011). “Synergetic effects of oral administration of levamisole and Echinacea purpurea on immune response in Wistar rat”. Res Vet Sci.91 (1): 82–5. doi:10.1016/j.rvsc.2010.07.027. PMID20797737.
Sadigh-Eteghad S, khayat-Nuri H, Abadi N, Ghavami S, Golabi M, Shanebandi D (2011). “Synergetic effects of oral administration of levamisole and Echinacea purpurea on immune response in Wistar rat”. Res Vet Sci.91 (1): 82–5. doi:10.1016/j.rvsc.2010.07.027. PMID20797737.