APA استشهاد

Singh,Uttam Kumar, & Nayak, A. K. (1997). Science Education. Commonwealth Publishers.

استشهاد بنمط شيكاغو

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

MLA استشهاد

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