(1999). The employment situation in January 1999 (final results). NSO Special Release.
Chicago-referens (17:e uppl.)"The Employment Situation in January 1999 (final Results)." NSO Special Release 1999.
MLA-referens (9:e uppl.)"The Employment Situation in January 1999 (final Results)." NSO Special Release, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.