https://libraryguides.missouri.edu/c.php?g=122968&p=890640
https://www.loc.gov/aba/cataloging/classification/lcco/lcco_m.pdf
https://libraryguides.missouri.edu/c.php?g=122968&p=890640
https://www.loc.gov/aba/cataloging/classification/lcco/lcco_m.pdf