(2000). National Assessment of Educational Progress 1987 High School Transcript Study / United States Department of Education. National Center for Education Statistics. [electronic resource].
Παραπομπή σε μορφή Chicago (17η εκδ.)National Assessment of Educational Progress 1987 High School Transcript Study / United States Department of Education. National Center for Education Statistics. [electronic Resource]. 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)National Assessment of Educational Progress 1987 High School Transcript Study / United States Department of Education. National Center for Education Statistics. [electronic Resource]. 2000.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.