The official Conference Proceedings is available as a download. It includes all abstracts, papers, and posters. The Proceedings has a Registered ISBN number and Barcode.
Citation and reference list suggestion—
LastName, Initial. (2020). Title of your paper. In R. Boone & K. Higgins (Eds.), Proceedings of the Building Bridges IV Conference on Special Education. (pp. nn – nn). http://bbiv.org/proceedings