APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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