APA-referens (7:e uppl.)
Smokeless Tobacco, E-Vapour Products & Heated Tobacco in the Czech Republic. Euromonitor International Ltd.
Chicago-referens (17:e uppl.)
Smokeless Tobacco, E-Vapour Products & Heated Tobacco in the Czech Republic. Euromonitor International Ltd.
MLA-referens (9:e uppl.)
Smokeless Tobacco, E-Vapour Products & Heated Tobacco in the Czech Republic. Euromonitor International Ltd.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.