Changes in social studies performance, 1972-76 :
selected results from the second assessment of social studies.

APA Citation

National Assessment of Educational Progress (Project)., National Center for Educational Statistics. (1978). Changes in social studies performance, 1972-76: selected results from the second assessment of social studies. Denver: National Assessment of Educational Progress, Education Commission of the States.

MLA Citation

National Assessment of Educational Progress (Project), and National Center for Educational Statistics. Changes In Social Studies Performance, 1972-76: Selected Results From the Second Assessment of Social Studies. Denver: National Assessment of Educational Progress, Education Commission of the States, 1978.