討論:Pulau Ubin

山羊百科，林文智老師的植物、山岳、攝影紀錄

• Gard. Bull. Singapore. 44: 51 1992；https://www.biodiversitylibrary.org/page/43577904#page/79/mode/1up

Turner, I. M. (Ian Mark), Tan, Hugh T. W. and Chua, K S；A Botanical Survey of Pulau Ubin