Note: Please note this is the date of publication (not the date of recording).
Format: in text citation
The Victorian street had a very different audio signature (Surname/Recordist, Year).
Format: reference
Author/speaker or recordist (Year) Title [medium]. Available from: URL [Accessed date].
Example: in text citation
The Victorian street had a very different audio signature (Bergonzi, 1994).
Example: reference
Bergonzi, B. (1994) Victorian street [sound recording]. Available from: https://sounds.bl.uk/Environment/Sound-effects/027M-1CD0126081X2-0100V0 [Accessed 14 January 2020].