Verweis
Hari, Gwyn ap & Sprakes, Andy (2019). How We XP - What Happens When 2 Punks from Donny Decide to Open a School. XP School Trust.

Hari, Gwyn ap & Sprakes, Andy (2019). How We XP - What Happens When 2 Punks from Donny Decide to Open a School. XP School Trust.