APA-referens (7:e uppl.)
(2021). Attitudes of Europeans towards tobacco and electronic cigarettes. European Commission.
Chicago-referens (17:e uppl.)
Attitudes of Europeans Towards Tobacco and Electronic Cigarettes. Bruselas: European Commission, 2021.
MLA-referens (9:e uppl.)
Attitudes of Europeans Towards Tobacco and Electronic Cigarettes. European Commission, 2021.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.