(Aŭgusto 2015) “Comprehensive chemical characterization of Rapé tobacco products: Nicotine, un-ionized nicotine, tobacco-specific N′-nitrosamines, polycyclic aromatic hydrocarbons, and flavor constituents”, Food and Chemical Toxicology82, p. 50–58. doi:10.1016/j.fct.2015.04.016.
usda.gov
plants.sc.egov.usda.gov
USDA, NRCS (n.d.). "Nicotiana rustica". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Alirita la 20an de Julio 2015.
web.archive.org
BSBI List 2007 (xls).Botanical Society of Britain and Ireland. Arkivita el la originalo (xls) en 2015-06-26. Alirita en 2014-10-17.