Philips, D. (1992). Longman preparation course for the TOEFL. Tapescript and answer key (1st ed. 6th impression.). Longman.
Chicago-Zitierstil (17. Ausg.)Philips, Deborah. Longman Preparation Course for the TOEFL. Tapescript and Answer Key. 1st ed. 6th impression. New York: Longman, 1992.
MLA-Zitierstil (9. Ausg.)Philips, Deborah. Longman Preparation Course for the TOEFL. Tapescript and Answer Key. 1st ed. 6th impression. Longman, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.