Gale Research Company & Dresser, P. D. (1989). New research centers: The supplement to the 13th edition of research centers directory. Gale Research Company.
Chicago-Zitierstil (17. Ausg.)Gale Research Company und Peter D. Dresser. New Research Centers: The Supplement to the 13th Edition of Research Centers Directory. Detroit: Gale Research Company, 1989.
MLA-Zitierstil (8. Ausg.)Gale Research Company und Peter D. Dresser. New Research Centers: The Supplement to the 13th Edition of Research Centers Directory. Gale Research Company, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.