(1998). The employment situation in October 1997 (final results). NSO Special Release.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"The Employment Situation in October 1997 (final Results)." NSO Special Release 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"The Employment Situation in October 1997 (final Results)." NSO Special Release, 1998.
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