APA (7th ed.) Citation

Spencer, R. H. (1985). Computer usability testing and evaluation. Prentice-Hall.

Chicago Style (17th ed.) Citation

Spencer, Richard H. Computer Usability Testing and Evaluation. Englewood Cliffs, N.J.: Prentice-Hall, 1985.

MLA (9th ed.) Citation

Spencer, Richard H. Computer Usability Testing and Evaluation. Prentice-Hall, 1985.