When referencing a press release:
Author, A., or Corporate/Group Author. (Year, Month day). Title of press release in italic sentence case [Press release]. URL
Reference list entry
NZ Union of Students' Associations (2019, July 19). Students release vocational education wishlist [Press release].
The NZ Union of Students' Associations (2019) argues ... (para. 6).
... (NZ Union of Students' Associations, 2019, para. 6).