For speech you should find the authoritative source for the text such as transcript or recording and cite this using the rules of the book, video documentary, website, or other source for the quotation. The reference format you need will depend on the type of document you’ve used.
Rule: (Editor Year)
Rule: (Editor Year:page number)
Dr. King declared, 'I have a dream that one day this nation will rise up and live out the true meaning of its creed' (Smith 2009:9).
Rule: (Speaker Year) or Speaker (Year)
Rule: Editor, A (ed.) (Year) Title of work, Publisher, Place of publication.
Smith J (ed.) (2009) Well said! Great speeches in American history, E & K Publishing, Washington, DC.
If you cannot find a transcript or recording, use the format below.
Rule: Speaker A (Year of speech) Title of speech, Description of speech, Location, Day Month of speech.
Nelson B (2016) Anzac day dawn service address 2016, presented on Anzac Day dawn service 20016, Australia, 25 April.
Rule: Speaker A (Year of speech) Title of speech [format and medium], accessed date Day Month Year, URL
King M Jr (1963) I have a dream [recorded speech audio file], viewed 25 March 2016, http://www.thekingcenter.org/archive
Australian Government (2021) Style Manual, accessed 24 May 2021, https://www.stylemanual.gov.au/style-rules-and-conventions/referencing-and-attribution/author-date
Monash University (2020) Harvard (2020 EDN), accessed 3 June 2021, .