APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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