PennWest Libraries uses the Library of Congress Classification System. Business books can be found in the following sections:
| Call # | Subject |
|---|---|
| HA | Statistics |
| HB | Economic Theory, Demography |
| HC | Economic History and Conditions |
| HD | Industries, Land Use, Labor |
| HE | Transportation and Communications |
| HF | Commerce |
| HG | Finance |
| HJ | Public Finance |