Leach & Malvino, . (1995). Digital Principles & Application. New Delhi: Tata Macgraw-Hill.
Leach & Malvino, . 1995. Digital Principles & Application. New Delhi: Tata Macgraw-Hill.
Leach & Malvino, . Digital Principles & Application. New Delhi: Tata Macgraw-Hill. 1995.
