For citation within United Nations documents, please use the United Nations Editorial Manual as the style guide for citation.
-- The Bluebook: A Uniform System of Citation (Located at the Reference Desk on the first floor )
Pages 186, 198-205: This applies to both The Chicago Manual of Style and APA Style.
For online sources
Many documents can be accessed by undocs.org/ .followed by the document symbol,
such as " undoc.org/E/...... " (documents by Economic and Social Council), http://undocs.org/A/RES/...... (resolution adopted by General Assembly), undocs.org/S/RES/..... (resolution adopted by Security Council), etc.
Resolution--
Organization. Date. Title. Session. Document symbol. Available at URL if accessed online)
e.g.
UN (United Nations) General Assembly. 2017. Resolution adopted by the General Assembly
on 6 July 2017 -- Work of the Statistical Commission pertaining to the 2030 Agenda for
Sustainable Development. Seventy-first session. A/RES/71/313. Available at
https://undocs.org/A/RES/71/313 (accessed June 2019)
But within UN documents:
General Assembly resolution 67/97, The rule of law at the national and international levels,
A/RES/67/97 (14 December 2012), available from undocs.org/A/RES/67/97.
Security Council resolution 2541, S/RES/2541(2020) (31 August 2020), available
from undocs.org/S/RES/2541(2020).
Treaty--
Title, Participant(s), Place, Date. Publication Title, Vol. No., Issue No. , page No. URL if
accessed online.
e.g.
Convention on the Recognition and Enforcement of Foreign Arbitral Awards, New York, 10 June
1958, United Nations Treaty Series, vol. 330, No. 4739, p. 3, available from treaties.
un.org/pages/ViewDetails.aspx?src=TREATY&mtdsg_no=XXII-1&chapter=22&lang=en
For print sources
Treaty--
Agreement Regarding Mutual Assistance Between Their Customs Administrations,
U.S.-Ir., art. 3, Sept. 16, 1996, 2141 U.N.T.S 51.
Resolution--
G.A. Res. 832(IX), U.N.GAOR, 9th Sess., Supp.No.21, U.N.Doc.
A/2890, at 19 (Oct. 21, 1954).
U.N. Charter art. 94,¶ 1.
Statute of the International Tribunal for the Law of the Sea, Dec. 10, 1982, 1833 U.N.T.S. 561.
-- How should I cite a United Nations document?
This official website provides more guidelines and advice on how to cite UN documents.