ETS. (2024). THE OFFICIAL GUIDE TO THE TOEFL IBT TEST (7TH.). TATA MCGRAW HILL.
Citazione stile Chigago Style (17a edizione)ETS. THE OFFICIAL GUIDE TO THE TOEFL IBT TEST. 7TH. NEW DELHI: TATA MCGRAW HILL, 2024.
Citatione MLA (9a ed.)ETS. THE OFFICIAL GUIDE TO THE TOEFL IBT TEST. 7TH. TATA MCGRAW HILL, 2024.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.