山羊百科，林文智老師的植物、山岳、攝影紀錄

Part I

• e-Flora of Thailand；37. Geophila D.Don；https://botany.dnp.go.th/eflora/floraGenus.html?factsheet=Geophila&tdcode=07942

Part II

Part III

1. Chua, Keng Soon 2018 Snake pennywort, Geophila repens, at Kent Ridge SINGAPORE BIODIVERSITY RECORDS 2018: 43

1. Teo, S., B. R. Kurukulasuriya and H. T. W. Tan 2010 The distribution and status in Singapore of the snake pennywort, Geophila repens (L.) I.M.Johnst. (Rubiaceae) NATURE IN SINGAPORE 3: 183–186