Bernard Kolman, Robert C Busby & Sharon Ross. (2001). Discrete Mathematical Structures. New Delhi: PHI.
Bernard Kolman, Robert C Busby and Sharon Ross. 2001. Discrete Mathematical Structures. New Delhi: PHI.
Bernard Kolman, Robert C Busby and Sharon Ross. (2001). Discrete Mathematical Structures. New Delhi: PHI.
Bernard Kolman, Robert C Busby and Sharon Ross. Discrete Mathematical Structures. New Delhi: PHI. 2001.