How to revert back to mountain lion on macbook air

[hk3948]

So guys. 'Upgraded' to Mavericks. Would now like to go back to ML. How do i do this on a 2013 macbook air given that i don't have the ML disc as didn't come with my air?

Do I need to go and buy the ML disc from Apple? Cheers people

 

[hk3948]

Mac App Store > Store menu > View My Account > click "Manage" in the Hidden Purchases section.

This doesnt seem to work.
So do i have to purchase it from the apple store and create a bootable usb?

 

[hk3948]

So quick update. None of the mentioned methods worked. Mountain Lion did not show up in purchase history, however Mavericks was!
Anyway, eventually took it to Apple sotre with a genius appointment and within 6 minutes i had a fresh install of Mountain Lion on my air again. Aaaaah, back to normal

Anyways, the technician did mention that the next time, the way to do it is to download the recovery disk assistant tool from apple if i have the same porblem. I will probably just create a recovery USB incase i ever 'upgrade' to mavericks again