The Senate Code of Official Conduct :
Select Committee on Ethics, United States Senate, One Hundred Fourteenth Congress, first session.

APA Citation

United States. Congress. Senate. Select Committee on Ethics. (2015). The Senate Code of Official Conduct: Select Committee on Ethics, United States Senate, One Hundred Fourteenth Congress, first session. Washington, [D.C.]: U.S. Government Publishing Office.

MLA Citation

United States. Congress. Senate. Select Committee on Ethics. The Senate Code of Official Conduct: Select Committee On Ethics, United States Senate, One Hundred Fourteenth Congress, First Session. Washington, [D.C.]: U.S. Government Publishing Office, 2015.

Warning: These citations may not always be complete (especially for serials).