Scott Bomboy, The House's Contempt Powers Explained, Constitution Daily (National Constitution Center blog) (May 7, 2019)
Todd Garvey, Cong. Research Serv., R45653, Congressional Subpoenas: Enforcing Executive Branch Compliance (2019)
Michael L. Koempel, Cong. Research Serv., R44247, A Survey of House and Senate Committee Rules on Subpoenas (2018)
