(1982). Research services directory: A guide to laboratories, consultants, firms, data collections and analysis centers, individuals, and other facilities .. (2. ed.). Gale Research Co.
Chicago-Zitierstil (17. Ausg.)Research Services Directory: A Guide to Laboratories, Consultants, Firms, Data Collections and Analysis Centers, Individuals, and Other Facilities .. 2. ed. Detroit, Mich: Gale Research Co, 1982.
MLA-Zitierstil (9. Ausg.)Research Services Directory: A Guide to Laboratories, Consultants, Firms, Data Collections and Analysis Centers, Individuals, and Other Facilities .. 2. ed. Gale Research Co, 1982.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.