Sapundzhiev, N., & Werner, J. A. (). „Nasal snuff: Historical review and health related aspects”. Laryngology and Otology. 117 (9): 686–691. doi:10.1258/002221503322334486. PMID14561353.Mentenanță CS1: Nume multiple: lista autorilor (link)
Sapundzhiev, N., & Werner, J. A. (). „Nasal snuff: Historical review and health related aspects”. Laryngology and Otology. 117 (9): 686–691. doi:10.1258/002221503322334486. PMID14561353.Mentenanță CS1: Nume multiple: lista autorilor (link)
„Health Effects and Dependency Associated with Snuff Consumption”. . PMID29319988.