Tolong jelaskan mengenai Rujukan dari Burung Pekaka Sungai dalam bahasa melayu

Rob Baldwin & Colin Richardson, Mangroves: Arabian sea forests , accessed 11/04/07.

Heinrich L. Bregulla (1992) Birds of Vanuatu, Anthony Nelson, Oswestry, England.

C Hilary Fry, Kathie Fry & Alan Harris (1992) Kingfishers, Bee-eaters & Rollers, Christopher Helm (Publishers) Ltd., London.

Graham Pizzey & Frank Knight (1997) The Graham Pizzey & Frank Knight Field Guide to the Birds of Australia, HarperCollins, London, UK.

Craig Robson (2002) A Field Guide to the Birds of South-East Asia, New Holland Publishers (UK) Ltd.