Tinjauan POJK Nomor 57/POJK.04/2020 terhadap Urgensi Perubahan Pelaksanaan Pasar Sekunder pada Securities Crowdfunding bagi Penerbit, Pemodal, dan Penyelenggara = POJK 57/POJK.04/2020 on the Urgency of Changes in the Implementation of the Secondary Market in Securities Crowdfunding for Issuers, Investors, and Operators