Echternacht, G. (1977). A comparative study of secondary schools with different score patterns: Prepared for the Advisory Panel on the Scholastic Aptitude Test Score Decline. College Entrance Examination Board.
Chicago-Zitierstil (17. Ausg.)Echternacht, Gary. A Comparative Study of Secondary Schools with Different Score Patterns: Prepared for the Advisory Panel on the Scholastic Aptitude Test Score Decline. [New York]: College Entrance Examination Board, 1977.
MLA-Zitierstil (9. Ausg.)Echternacht, Gary. A Comparative Study of Secondary Schools with Different Score Patterns: Prepared for the Advisory Panel on the Scholastic Aptitude Test Score Decline. College Entrance Examination Board, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.