Urgent help needed with citation of an US litigation

Hi everybody! For a paper I need to cite this litigation: In re African-American Slave Descendants Litigation - Wikisource, the free online library

I wrote a paper on parts of it but I'm not getting anywhere with OWL Purdue (sadly). Does anyone know what the works cited entry would need to look like? My deadline is fast approaching and I'm lost :/

Thank you for any help!!