APA (7th ed.) Citation

Keur, C., & Hillegass, A. (2017). IOS PROGRAMMING: THE BIG NERD RANCH GUIDE (5th ed.). Big Nerd Ranch.

Chicago Style (17th ed.) Citation

Keur, Christian, and Aaron Hillegass. IOS PROGRAMMING: THE BIG NERD RANCH GUIDE. 5th ed. Atlanta, GA: Big Nerd Ranch, 2017.

MLA (9th ed.) Citation

Keur, Christian, and Aaron Hillegass. IOS PROGRAMMING: THE BIG NERD RANCH GUIDE. 5th ed. Big Nerd Ranch, 2017.