APA-Zitierstil (7. Ausg.)

Phillips, D. (2015). Longman preparation course for the TOEFL iBT test: [with answer key] (3. ed.). Pearson Education.

Chicago-Zitierstil (17. Ausg.)

Phillips, Deborah. Longman Preparation Course for the TOEFL IBT Test: [with Answer Key]. 3. ed. White Plains, NY: Pearson Education, 2015.

MLA-Zitierstil (9. Ausg.)

Phillips, Deborah. Longman Preparation Course for the TOEFL IBT Test: [with Answer Key]. 3. ed. Pearson Education, 2015.