Cita APA (7a ed.)

Matthews, M., & Salisbury, K. (2011). IELTS practice tests plus 3: With key. Pearson Education.

Cita Chicago Style (17a ed.)

Matthews, Margaret, y Katy Salisbury. IELTS Practice Tests Plus 3: With Key. Pearson Education, 2011.

Cita MLA (9a ed.)

Matthews, Margaret, y Katy Salisbury. IELTS Practice Tests Plus 3: With Key. Pearson Education, 2011.