Here are the basic formats for referencing papers presented at conferences. The grey boxes highlight the information that needs to change in each reference. You do not include them in your own work.
Pay close attention to the punctuation and capitalisation in each of the formats and the examples below.
With DOI (digital object identifier)
J. K. Author, “Title of paper,” in Abbreviated Name of Conf., City, State (USA only), Country, Month. date, year, pp. xxx-xxx. doi: xxxxxx.
Without DOI
J. K. Author, “Title of paper,” in Abbreviated Name of Conf., City, State (USA only), Country, Month. date, year, pp. xxx-xxx. [Online]. Available: http://www.url.com.
[1] A. Schacht, K. Foster, and J. Roth, “Location privacy in the era of 5G,” in Proc. 54th Hawaii Int. Conf. Syst. Sci., Honolulu, HI, USA, 2021, pp. 6884-6892. [Online]. Available: http://hdl.handle.net/10125/71447
[2] Q. Zhou, A. J. G. Gray, and S. McLaughlin, “ToCo: An ontology for representing hybrid telecommunication networks,” in Proc. 16th Int. European Semantic Web Conf., Portorož, Slovenia, Jun. 2-6, 2019, pp. 507-522. [Online]. Available: https://link.springer.com/content/pdf/10.1007%2F978-3-030-21348-0_33.pdf
[3] V. Arun and H. Balakrishnan, “RFocus: Beamforming using thousands of passive antennas,” in 17th USENIX Symp. Netw. Syst. Design Implementation, Santa Clara, CA, USA, Feb. 25-27, 2020, pp. 1046-1062. [Online]. Available: https://www.usenix.org/conference/nsdi20/presentation/arun