Tongnunui, S., Wattanakornsiri, A., Pachana, K., Beamish, F.W. and Tongsukdee, S. 2017. Preliminary Investigation of Irrawaddy Dolphin (Orcaella brevirostris) in the Bangpakong Estuary, Inner Gulf of Thailand. Environment and Natural Resources Journal. 9, 2 (Apr. 2017), 48–57.