Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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