Science achievement in the middle school years :
IEA's third international mathematics and science study (TIMSS) /
Albert E. Beaton, ... [et al.].

APA Citation

Beaton, A. E., TIMSS International Study Center., International Association for the Evaluation of Educational Achievement. (1996). Science achievement in the middle school years: IEA's third international mathematics and science study (TIMSS). Chestnut Hill, MA: Center for the Study of Testing, Evaluation, and Educational Policy, Boston College.

MLA Citation

Beaton, Albert E, TIMSS International Study Center, and International Association for the Evaluation of Educational Achievement. Science Achievement In the Middle School Years: IEA's Third International Mathematics And Science Study (TIMSS). Chestnut Hill, MA: Center for the Study of Testing, Evaluation, and Educational Policy, Boston College, 1996.