APA-referens (7:e uppl.)

Hirvonen, L. (1984). Smoking cessation by the five-day plan in Finland. University of Oulu : Oulu University Library, [distr.].

Chicago-referens (17:e uppl.)

Hirvonen, Leo. Smoking Cessation by the Five-day Plan in Finland. Oulu: University of Oulu : Oulu University Library, [distr.], 1984.

MLA-referens (8:e uppl.)

Hirvonen, Leo. Smoking Cessation by the Five-day Plan in Finland. University of Oulu : Oulu University Library, [distr.], 1984.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.