Iggland, B. (1987). Customer evaluations for industrial product development. Dept. of Management and Economics, Linköping University.
Chicago-referens (17:e uppl.)Iggland, Benny. Customer Evaluations for Industrial Product Development. Linköping: Dept. of Management and Economics, Linköping University, 1987.
MLA-referens (8:e uppl.)Iggland, Benny. Customer Evaluations for Industrial Product Development. Dept. of Management and Economics, Linköping University, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.