Gale Research Inc & Gale Group. (2007). Super LCCS : Gale's Library of Congress classification schedules: Combined with additions and changes through 2006. Thomson Gale.
Chicago-viite (17. p.)Gale Research Inc ja Gale Group. Super LCCS : Gale's Library of Congress Classification Schedules: Combined with Additions and Changes Through 2006. Detroit: Thomson Gale, 2007.
MLA-viite (9. p.)Gale Research Inc ja Gale Group. Super LCCS : Gale's Library of Congress Classification Schedules: Combined with Additions and Changes Through 2006. Thomson Gale, 2007.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.