APA استشهاد

Uttam Kumar Singh & Nayak, A. (1997). Special education. Commonwealth.

استشهاد بنمط شيكاغو

Uttam Kumar Singh و A.K Nayak. Special Education. New Delhi: Commonwealth, 1997.

MLA استشهاد

Uttam Kumar Singh و A.K Nayak. Special Education. Commonwealth, 1997.