Xianggang Shi; Jianhua Jin; Chuangxing Ye; Weiqiu Liu (2012). "First fruit fossil record of Morinda (Rubiaceae) from China". Review of Palaeobotany and Palynology. 179 (1 July): 13–16. Bibcode:2012RPaPa.179...13S. doi:10.1016/j.revpalbo.2012.04.001.
Xianggang Shi; Jianhua Jin; Chuangxing Ye; Weiqiu Liu (2012). "First fruit fossil record of Morinda (Rubiaceae) from China". Review of Palaeobotany and Palynology. 179 (1 July): 13–16. Bibcode:2012RPaPa.179...13S. doi:10.1016/j.revpalbo.2012.04.001.