Betty J. Alford. Leading Academic Achievement for English Language Learners. SAGE.
Citazione stile Chigago Style (17a edizione)Betty J. Alford. Leading Academic Achievement for English Language Learners. SAGE.
Citatione MLA (8a ed.)Betty J. Alford. Leading Academic Achievement for English Language Learners. SAGE.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.