APA (7 वां संस्करण) प्रशस्ति पत्र

Brown, H. D. (2001). Teaching by principles: An interactive approach to language pedagogy (Second edition.). Longman.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Brown, H. Douglas. Teaching by Principles: An Interactive Approach to Language Pedagogy. Second edition. White Plains, NY: Longman, 2001.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Brown, H. Douglas. Teaching by Principles: An Interactive Approach to Language Pedagogy. Second edition. Longman, 2001.