Walker N, Howe C, Glover M, McRobbie H, Barnes J, Nosa V, et al. (). „Cytisine versus Nicotine for Smoking Cessation”. New England Journal of Medicine. 371 (25): 2353–62. doi:10.1056/nejmoa1407764. PMID25517706.
Walker N, Howe C, Glover M, McRobbie H, Barnes J, Nosa V, et al. (). „Cytisine versus Nicotine for Smoking Cessation”. New England Journal of Medicine. 371 (25): 2353–62. doi:10.1056/nejmoa1407764. PMID25517706.