(1973). Directory of Pennsylvania Library Resources: A Guide to the Resources and Services of Academic, Special, and Large Public Libraries.
Style de citation Chicago (17e éd.)Directory of Pennsylvania Library Resources: A Guide to the Resources and Services of Academic, Special, and Large Public Libraries. 1973.
Style de citation MLA (9e éd.)Directory of Pennsylvania Library Resources: A Guide to the Resources and Services of Academic, Special, and Large Public Libraries. 1973.
Attention : ces citations peuvent ne pas être correctes à 100%.