International Legume Database & Information Service (ILDIS) (2005): Genus Lespedeza. Version 10.01, November 2005. Retrieved 2011-FEB-18.
Morimoto, Hiroshi & Matsumoto, Norichika (1966). Über Alkaloide, VI. Inhaltsstoffe Lespedeza bicolor var. japonica, II. ["Alkaloid contents of L. bicolor var. japonica II."] J. Liebigs Ann. Chem.682(1): 212–218 [in German]. doi:10.1002/jlac.19666920122
Morimoto, Hiroshi & Oshio, Haruji (1965). Über Alkaloide, V. Inhaltsstoffe von Lespedeza bicolor var. japonica, I. Über Lespedamin, ein neues Alkaloid. ["Alkaloid contents of L. bicolor var. japonica I. On Lespedamin, a novel alkaloid."] J. Liebigs Ann. Chem.682(1): 212–218 [in German]. doi:10.1002/jlac.19656820121