How to recover my MAC OS X Mavericks?

I bought Mac book pro retina 13' in jan 2014. yesterday I tried to install windows 8.1 using USB disk image, I gone through the instructions using boot camp. I partition the MAC disk allocated 60GB for windows 8.1, then it was restarted and start installing windows. Just before finishing this installation process my Mac book was fell down by my baby, the USB pendrive bent and stoped the process and restarted windows 8.1 with no network settings. I am not able to open MAC OS X mavericks even i restart its opening windows 8.1 only. even in windows 8.1 desktop no internet (wi-fi), touch pad is not working for right click, lot of problems. I have no back up for MAC OS X mavericks. what to do to get new OS X mavericks.