(2000). Writing Anchor Levels. U.S. Department of Education.
Citazione stile Chigago Style (17a edizione)Writing Anchor Levels. U.S. Department of Education, 2000.
Citatione MLA (9a ed.)Writing Anchor Levels. U.S. Department of Education, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.