http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Union security in public employment of free riding and free association
Institute of Public Employment, New York State School of Industrial and Labor Relations
by Kurt L. Hanslowe, David Dunn, and Jay Erstling.
Institute of Public Employment monograph ; no. 8