See this example properly formatted in the QUT Cite tool.
Standard in-text citation examples are in Getting started - In-text citation.
If a conference paper is published in a journal, format the reference in the same way as a journal article.
Author, A. A. (Dates of conference). Title of contribution [Type of contribution]. Conference Name, Location. http://www.xxxxxxxx
Schindler, P. (2019, February 11-15). Doing our part to end the "book famine": UQ's Ebook Accessibility Project [Conference paper]. ALIA Information Online, Sydney, NSW, Australia. https://custom.cvent.com/08D029BB7DF94703A11DA6B8473EF8E5/files/1768d9671d6a4e01b79c4a0762432a76.pdf
Conference presentations include papers, posters, keynote and symposium presentations.
Include the type of contribution in square brackets after the title of the contribution.
Include the names of all listed authors, even if they were not present.
Capitalise the name of the conference.
If the paper has a DOI, include it in place of the URL.
Format the location thus: Place, State abbreviation (if applicable), Country.