Não informado. (1957). Tobacco abstracts: Citations and abstracts; world literature onnicotiana. Tobacco Literature Service.
Chicago-referens (17:e uppl.)Não informado. Tobacco Abstracts: Citations and Abstracts; World Literature Onnicotiana. Raleigh, NC: Tobacco Literature Service, 1957.
MLA-referens (8:e uppl.)Não informado. Tobacco Abstracts: Citations and Abstracts; World Literature Onnicotiana. Tobacco Literature Service, 1957.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.