Hirvonen, L. (1984). Smoking cessation by the five-day plan in Finland. University of Oulu : Oulu University Library, [distr.].
Lua i Stíl Chicago (17ú heag.)Hirvonen, Leo. Smoking Cessation by the Five-day Plan in Finland. Oulu: University of Oulu : Oulu University Library, [distr.], 1984.
Lua MLA (8ú heag.)Hirvonen, Leo. Smoking Cessation by the Five-day Plan in Finland. University of Oulu : Oulu University Library, [distr.], 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.