Creighton, R. H. (2010). Unity 3D game development by example: Beginner's guide : a seat-of-your-pants manual for building fun, groovy little games quickly. Packt Pub..

Creighton, Ryan Henson. Unity 3D Game Development by Example: Beginner's Guide : A Seat-of-your-pants Manual for Building Fun, Groovy Little Games Quickly. Birmingham [U.K.]: Packt Pub., 2010.

Creighton, Ryan Henson. Unity 3D Game Development by Example: Beginner's Guide : A Seat-of-your-pants Manual for Building Fun, Groovy Little Games Quickly. Packt Pub., 2010.