APA (7th ed.) Citation

Gay, G., & Hembrooke, H. (2004). Activity-centered design: An ecological approach to designing smart tools and usable systems. The MIT Press.

Chicago Style (17th ed.) Citation

Gay, Geri, and Helene Hembrooke. Activity-centered Design: An Ecological Approach to Designing Smart Tools and Usable Systems. Cambridge, Massachusetts: The MIT Press, 2004.

MLA (9th ed.) Citation

Gay, Geri, and Helene Hembrooke. Activity-centered Design: An Ecological Approach to Designing Smart Tools and Usable Systems. The MIT Press, 2004.