Normally material used in the library is obtained from specified sources that have imposed controls on its technical and/or editorial content. The following codes are used to detail the source of an article
| WVPAC | Papers from WVPA Global Congress |
| WVPAAS | Papers from WVPA Asia Meetings |
| SPON | Papers from our sponsor |
| IHP | Articles from International Hatchery Practice |
| IPP | Articles from International Poultry Production |
| HTS | Papers from the Hafez Turkey Symposium |
| PA | Papers from the Poultry Africa Conference |