Yudha, G.P. et al. 2014. Pertumbuhan Daun Angsana (Pterocarpus indicus Willd) dan Akumulasi Logam Timbal (Pb). Jurnal Biologi UNAND. 2, 2 (Aug. 2014). DOI:https://doi.org/10.25077/jbioua.2.2.%p.2013.