National Assessment of Educational Progress. (1979). The second assessment of mathematics, 1977-78: Released exercise set. The Assessment.
Chicago-Zitierstil (17. Ausg.)National Assessment of Educational Progress. The Second Assessment of Mathematics, 1977-78: Released Exercise Set. Dever: The Assessment, 1979.
MLA-Zitierstil (9. Ausg.)National Assessment of Educational Progress. The Second Assessment of Mathematics, 1977-78: Released Exercise Set. The Assessment, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.