Saastamoinen, O. (1979). Time patterns in the use of an urban skiing route. Finnish Society of Forest Science.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSaastamoinen, Olli. Time Patterns in the Use of an Urban Skiing Route. Finnish Society of Forest Science, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSaastamoinen, Olli. Time Patterns in the Use of an Urban Skiing Route. Finnish Society of Forest Science, 1979.
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