APA-viite (7. p.)
(2021). Attitudes of Europeans towards tobacco and electronic cigarettes. European Commission.
Chicago-viite (17. p.)
Attitudes of Europeans Towards Tobacco and Electronic Cigarettes. Bruselas: European Commission, 2021.
MLA-viite (9. p.)
Attitudes of Europeans Towards Tobacco and Electronic Cigarettes. European Commission, 2021.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.