Wallgren, A., & Wallgren, B. (2014). Register-based statistics: Statistical methods for administrative data (Second edition.). Wiley. https://doi.org/10.1002/9781118855959
Παραπομπή σε μορφή Chicago (17η εκδ.)Wallgren, Anders, και Britt Wallgren. Register-based Statistics: Statistical Methods for Administrative Data. Second edition. Chichester, West Sussex, United Kingdom: Wiley, 2014. https://doi.org/10.1002/9781118855959.
Παραπομπή σε μορφή MLA (8th εκδ.)Wallgren, Anders, και Britt Wallgren. Register-based Statistics: Statistical Methods for Administrative Data. Second edition. Wiley, 2014. https://doi.org/10.1002/9781118855959.
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