APA (7th ed.) Citation

Krug, S. (2006). Don't make me think!: A common sense approach to Web usability (2nd ed.). New Riders Pub.

Chicago Style (17th ed.) Citation

Krug, Steve. Don't Make Me Think!: A Common Sense Approach to Web Usability. 2nd ed. Berkeley, CA: New Riders Pub, 2006.

MLA (8th ed.) Citation

Krug, Steve. Don't Make Me Think!: A Common Sense Approach to Web Usability. 2nd ed. New Riders Pub, 2006.