APA (7th ed.) Citation

Dittmann, H., Hardy, J., & Musgrave, L. (2000). Learn Library of Congress classification (2nd ed.). DocMatrix.

Chicago Style (17th ed.) Citation

Dittmann, Helena, Jane Hardy, and Lorraine Musgrave. Learn Library of Congress Classification. 2nd ed. Canberra, AT: DocMatrix, 2000.

MLA (9th ed.) Citation

Dittmann, Helena, et al. Learn Library of Congress Classification. 2nd ed. DocMatrix, 2000.