(1993). Directory of american research and technology. 1994. Organizations active in product development for business (28th ed.). R. R. Bowker.
Chicago-Zitierstil (17. Ausg.)Directory of American Research and Technology. 1994. Organizations Active in Product Development for Business. 28th ed. New Providence: R. R. Bowker, 1993.
MLA-Zitierstil (9. Ausg.)Directory of American Research and Technology. 1994. Organizations Active in Product Development for Business. 28th ed. R. R. Bowker, 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.