Percentile Distribution of Writing Performance Scores: 1984-96. US Department of Education.
Citazione stile Chigago Style (17a edizione)Percentile Distribution of Writing Performance Scores: 1984-96. US Department of Education.
Citatione MLA (9a ed.)Percentile Distribution of Writing Performance Scores: 1984-96. US Department of Education.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.