TIMSS 2011 encyclopedia
Mullis, Ina V. S., Michael O. Martin, Chad A. Minnich, Gabrielle M. Stanco, Alka Arora, Victoria A. S. Centurino, and Courtney E. Castle, eds. “TIMSS 2011 encyclopedia”, Chestnut Hill, MA: IEA, TIMSS & PIRLS, International Study Center, Lynch School of Education, Boston College, 2012. http://hdl.handle.net/2345/bc-ir:104611.