Hi,
Following books will be useful for you -
1. Pic Microcontroller and Embedded systems using Assembly and C for Pic18 by Muhammad Ali Mazidi, Rolin D. Mckinlay and Danny causey.
2. AVR Microcontroller and Embedded systems using Assembly and C by Muhammad Ali Mazidi, Sarmad Naimi and Sepehr Naimi.
3. 8051 Microcontroller and Embedded systems by Muhammad Ali Mazidi.