山羊百科，林文智老師的植物、山岳、攝影紀錄

Part I

• Flora of Thailand - Rubiaceae: SPERMACOCE；https://homepage.univie.ac.at/christian.puff/_FTH-RUB/FTH-RUB-Spermacoce_compl_WEB.htm
• 內貴章世；日本の野生植物 (改訂新版) 4: 291 2017；大橋広好，門田裕一，邑田仁，米倉浩司，木原浩 2017 日本の野生植物 (改訂新版) (4) アオイ科～キョウチクトウ科 平凡社 ISBN 978-4-582-53534-1

• Spermacoce laevis Lam. - Sumatra Database http://134.76.19.22/sumatra/taxa/Rubiaceae/Spermacoce%20laevis

Part II

• Lam., Tabl. Encycl. 1: 273；1436 (1792).；https://www.biodiversitylibrary.org/page/794460#page/292/mode/1up

• Forbes & Hemsl., J. Linn. Soc., Bot. 23: 392. 1886.；https://www.biodiversitylibrary.org/item/8379#page/395/mode/1up

Part III

1. Ward, Daniel B. 2011 Keys to the flora of Florida - 29, Spermacoce (Rubiaceae) Phytologia 93(3):275-282