Gale Research Inc. (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. 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. Super LCCS: Gale's Library of Congress Classification Schedules : Combined with Additions and Changes Through 2006. Thomson Gale, 2007.
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