VAS A. S. R. &. V. L. S. R., . (2011). SLOVE YOUR PROBLEMS : THE BIRBAL WAY. : PUSTAK MAHAL NEW DELHI.
VAS ANITA S R & VAS LUIS S R, . 2011. SLOVE YOUR PROBLEMS : THE BIRBAL WAY. : PUSTAK MAHAL NEW DELHI.
VAS ANITA S R & VAS LUIS S R, . SLOVE YOUR PROBLEMS : THE BIRBAL WAY. : PUSTAK MAHAL NEW DELHI. 2011.
