I need help in writing a citation for the following statement that I found on Jist Archive Hub at https://archiveshub.jsc.ac.uk/data/gb206-ms1561 : In 1846 a group of schoolmasters in Brighton, concerned about professional standards, set up a Society of Teachers, which was incorporated by Royal Charter in 1849 and became the College of Preceptors. The statement was written on an un-numbered page headed “Papers of the College of Preceptors” and under the sub-heading of,“Administrative/Biographical History”. (The Papers of the College of Preceptors are held by the University of Leeds.) The name of the author of the statement was not given. I’m trying to figure out what should be the lead element, who do I state as author, and what information needs to be included and in which order.