Cita APA (7th ed.)

Goodman, E., Kuniavsky, M., & Moed, A. (2012). Observing the user experience: A practitioner's guide to user research (2nd ed.). Morgan Kaufmann.

Cita Chicago (17th ed.)

Goodman, Elizabeth, Mike Kuniavsky, i Andrea Moed. Observing the User Experience: A Practitioner's Guide to User Research. 2nd ed. Waltham, Mass: Morgan Kaufmann, 2012.

Cita MLA (9th ed.)

Goodman, Elizabeth, et al. Observing the User Experience: A Practitioner's Guide to User Research. 2nd ed. Morgan Kaufmann, 2012.