Spencer, R. H. (1983). Planning, implementation, and control in product test and assurance. Prentice-Hall.
Chicago-referens (17:e uppl.)Spencer, Richard H. Planning, Implementation, and Control in Product Test and Assurance. Englewood Cliffs, N.J: Prentice-Hall, 1983.
MLA-referens (9:e uppl.)Spencer, Richard H. Planning, Implementation, and Control in Product Test and Assurance. Prentice-Hall, 1983.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.