James Cahill. An Index of Early Chinese Painters and Paintings: T'ang, Sung, and Yüan. (Berkeley: University of California Press, 1980. ISBN0520035763), pp. 21-22.
A version of this story appears in Herbert Allen Giles. An Introduction to the History of Chinese Pictorial Art. (London: Quaritch, 2d ed., 1918), pp. 47-48.
Kao Yu-kung, "Chinese Lyric Aesthetics", Words and Images: Chinese Poetry, Calligraphy, and Painting, pp. 84–5.