Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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