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LaRoche, S., & Foy, P. (2016). Sample Implementation in TIMSS 2015. In M. O. Martin, I. V. S. Mullis, & M. Hooper (Eds.), Methods and Procedures in TIMSS 2015 (pp. 5.1-5.175). Retrieved from Boston College, TIMSS & PIRLS International Study Center website: http://timss.bc.edu/publications/timss/2015-methods/chapter-5.html
Methods and Procedures in TIMSS 2015
Michael O. Martin, Ina V.S. Mullis, and Martin Hooper, Editors
Sylvie LaRoche and Pierre Foy