Laaksonen, S. (2018). Survey methodology and missing data: Tools and techniques for pratitioners. Springer International Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLaaksonen, Seppo. Survey Methodology and Missing Data: Tools and Techniques for Pratitioners. Switzerland: Springer International Publishing, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLaaksonen, Seppo. Survey Methodology and Missing Data: Tools and Techniques for Pratitioners. Springer International Publishing, 2018.
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