"Oak Ridge Boys (Musical group)" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Biography"@en . . . . . . . . . . . . . . . . . . . . . . . . . . "Contemporary musicians Vol. 4. / ed.: Michael L. LaBlanc" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Provides comprehensive information on musicians and groups from around the world. Entries include a detailed biographical essay, selected discographies, contact information, and a list of sources."@en . . . . . . . . "Contemporary musicians. Volume 4 profiles of the people in music"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .