^Hart, Merrill C.; Heyl, Frederick W. Spinasterol and Some of Its Esters. The Journal of Biological Chemistry. 1932, 95 (1): 311–5 [2019-06-29]. (原始内容存档于2020-01-21).
^Herath HM, Athukoralage PS, Jamie JF. A new oleanane triterpenoid from Gordonia ceylanica. Natural Product Letters. 2001, 15 (5): 339–44. PMID 11841118. doi:10.1080/10575630108041301.