APA (7 वां संस्करण) प्रशस्ति पत्र

Friend, M. P. (2011). Special education: Contemporary perspectives for school professionals (3rd ed.). Pearson Education.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Friend, Marilyn Penovich. Special Education: Contemporary Perspectives for School Professionals. 3rd ed. Upper Saddle River, N.J: Pearson Education, 2011.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Friend, Marilyn Penovich. Special Education: Contemporary Perspectives for School Professionals. 3rd ed. Pearson Education, 2011.