APA (7th ed.) Citation

Beaird, J., & George, J. (2014). The principles of beautiful web design (3rd ed.). sitepoint.

Chicago Style (17th ed.) Citation

Beaird, Jason, and James George. The Principles of Beautiful Web Design. 3rd ed. Collingwood, Victoria: sitepoint, 2014.

MLA (9th ed.) Citation

Beaird, Jason, and James George. The Principles of Beautiful Web Design. 3rd ed. sitepoint, 2014.