PHILLIPS, D. (1990). Longman practice test for the TOEFL. Longman Publisher.
Cita Chicago (17th ed.)PHILLIPS, Deborah. Longman Practice Test for the TOEFL. Singapore: Longman Publisher, 1990.
Cita MLA (9th ed.)PHILLIPS, Deborah. Longman Practice Test for the TOEFL. Longman Publisher, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.