Dittmann, H., Hardy, J., & Musgrave, L. (2000). Learn Library of Congress classification (2nd ed.). DocMatrix.
芝加哥风格引文Dittmann, Helena, Jane Hardy, 与 Lorraine Musgrave. Learn Library of Congress Classification. 2nd ed. Canberra, AT: DocMatrix, 2000.
MLA引文Dittmann, Helena, et al. Learn Library of Congress Classification. 2nd ed. DocMatrix, 2000.
警告：这些引文格式不一定是100％准确.