Singh, Y. P. (1978). Diffusion of an inteedicipline. New Heights.
Chicago Edition CitationSingh, Y P. Diffusion of an Inteedicipline. New Delhi: New Heights, 1978.
Cita MLASingh, Y P. Diffusion of an Inteedicipline. New Heights, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.