Ender Quintet by Orson Scott Card
Dune by Frank Herbert
Hyperion Quartet by Dan Simmons
The Earthfall Series by Orson Scott Card
The Martian Chronicles by Ray Bradbury
Unless you're positive you can correctly replicate the accent with spelling and be consistent, write the character has an accent. Vernacular's hard to write.
Check out Tai Pan by James Clavell. The main character has a Scottish accent that's written out very and well.