The Art of Japanese Calligraphy, 1973, author Yujiro Nakata, publisher Weatherhill/Heibonsha, ISBN 0-8348-1013-1. Qiu Xigui: (2000). Translation of 文字學概要 by Gilbert L. Mattos and Jerry Norman. Early China Special Monograph Series No. 4. Berkeley: The Society for the Study of Early China and the Institute of East Asian Studies, University of California, Berkeley. ISBN 1-55729-071-7.