APA (7 वां संस्करण) प्रशस्ति पत्र

Numrich, C. (2007). Face the issues: Intermediate listening and critical thinking skills (3rd ed.). Pearson/Longman.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Numrich, Carol. Face the Issues: Intermediate Listening and Critical Thinking Skills. 3rd ed. White Plains, N.Y: Pearson/Longman, 2007.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Numrich, Carol. Face the Issues: Intermediate Listening and Critical Thinking Skills. 3rd ed. Pearson/Longman, 2007.