APA (7e ed.) Bronvermelding

Dittmann, H., & Hardy, J. (2007). Learn Library of Congress classification (2nd North American ed.). TotalRecall Publications, Inc..

Chicago (17e ed.) Bronvermelding

Dittmann, Helena, en Jane Hardy. Learn Library of Congress Classification. 2nd North American ed. Friendswood, Tex: TotalRecall Publications, Inc., 2007.

MLA (9e ed.) Bronvermelding

Dittmann, Helena, en Jane Hardy. Learn Library of Congress Classification. 2nd North American ed. TotalRecall Publications, Inc., 2007.