Citazione Stile APA (7a Edizione)

Hashemi, L., & Thomas, B. (2003). PET, Preliminary English Test. Practice Tests plus: Includes 2004 exam especifications. Pearson Education.

Citazione stile Chigago Style (17a edizione)

Hashemi, Louise, e Barbara Thomas. PET, Preliminary English Test. Practice Tests Plus: Includes 2004 Exam Especifications. Essex: Pearson Education, 2003.

Citatione MLA (9a ed.)

Hashemi, Louise, e Barbara Thomas. PET, Preliminary English Test. Practice Tests Plus: Includes 2004 Exam Especifications. Pearson Education, 2003.