a. j. g. h. kostermans. “REINSTATEMENT OF PTEROCARPUS ECHINATA PERS. (LEGUMINOSAE-PAPILIONACEAE)”. Reinwardtia, vol. 11, no. 1, July 2025, p. 33, https://biologyjournal.brin.go.id/index.php/reinwardtia/article/view/264.