PHILIPS, D. (1999). Longman preparation course for the TOEFL test CBT volume: Companion to skills and strategies volume A. Addison Wesley Longman.
Lua i Stíl Chicago (17ú heag.)PHILIPS, Deborah. Longman Preparation Course for the TOEFL Test CBT Volume: Companion to Skills and Strategies Volume A. New York: Addison Wesley Longman, 1999.
Lua MLA (9ú heag.)PHILIPS, Deborah. Longman Preparation Course for the TOEFL Test CBT Volume: Companion to Skills and Strategies Volume A. Addison Wesley Longman, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.