Cyssco, d. r. (2013). Cracking the TOEFL. Test preparation models & problem solving. Puspa Swara.
Citazione stile Chigago Style (17a edizione)Cyssco, dhanny r. Cracking the TOEFL. Test Preparation Models & Problem Solving. Puspa Swara, 2013.
Citatione MLA (9a ed.)Cyssco, dhanny r. Cracking the TOEFL. Test Preparation Models & Problem Solving. Puspa Swara, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.