Hirvonen, L. (1984). Smoking cessation by the five-day plan in Finland. University of Oulu : Oulu University Library, [distr.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHirvonen, Leo. Smoking Cessation by the Five-day Plan in Finland. Oulu: University of Oulu : Oulu University Library, [distr.], 1984.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHirvonen, Leo. Smoking Cessation by the Five-day Plan in Finland. University of Oulu : Oulu University Library, [distr.], 1984.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.