New special libraries: A periodic suppl. to the 7. ed. of Directory of special libraries and information centers. Gale Research Co.
Chicago-Zitierstil (17. Ausg.)New Special Libraries: A Periodic Suppl. to the 7. Ed. of Directory of Special Libraries and Information Centers. Detroit, Mich: Gale Research Co.
MLA-Zitierstil (9. Ausg.)New Special Libraries: A Periodic Suppl. to the 7. Ed. of Directory of Special Libraries and Information Centers. Gale Research Co.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.