Library of Congress. Congressional Research Service & ProQuest (Firm). (2008). Definition of "Supervisor" Under the National Labor Relations Act. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Definition of "Supervisor" Under the National Labor Relations Act. [Place of publication not identified]: [publisher not identified], 2008.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Definition of "Supervisor" Under the National Labor Relations Act. [publisher not identified], 2008.
Warning: These citations may not always be 100% accurate.