APA (7th ed.) Citation
Creighton, R. H. (2013). Unity 4.x game development by example beginner's guide. Packt Publishing.
Chicago Style (17th ed.) Citation
Creighton, Ryan Henson. Unity 4.x Game Development by Example Beginner's Guide. Birmingham: Packt Publishing, 2013.
MLA (9th ed.) Citation
Creighton, Ryan Henson. Unity 4.x Game Development by Example Beginner's Guide. Packt Publishing, 2013.
Warning: These citations may not always be 100% accurate.