Jelaskan Subspesies dari Pelusios castanoides dalam bahasa melayu

Hewitt, John 1931. Descriptions of some African tortoises. Annals of the Natal Museum 6:461-506, pls. XXXVI–XXXVIII.

Tortoise & Freshwater Turtle Specialist Group 1996.  Pelusios castanoides.   2006 IUCN Red List of Threatened Species  Downloaded on 29 July 2007.