APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.