Citazione Stile APA (7a Edizione)

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.