| Ref. No. | Description | |
|---|---|---|
| 1522 | Rice, D.W. 1998 Marine Mammals of the World Systematics and Distribution. Special Publication number 4: The Society for Marine Mammalogy. 231p. | 1998 |
| 74657 | Bartley, D.M. (comp./ed.) 2006 DIAS. Introduced species in fisheries and aquaculture: information for responsible use and control. CD-ROM. Rome (Italy): FAO. | 2006 |
| 89745 | Kipping, J. 2010 Lestinogomphus silkeae sp. nov. from the Okavango and Zambezi Rivers (Odonata: Gomphidae). International Journal of Odonatology 13(2):255-265. | 2010 |
| 89837 | Dijkstrakstra, K.-D.B., V. Clausnitzer and G.S. Vick 2006 Revision of the three-striped species of Phyllogomphus (Odonata, Gomphidae). Tijdschrift Voor Entomologie 149:1-14. | 2006 |
| 128831 | Fergusson, R.A. 2010 Nile crocodile Crocodylus niloticus. pp. 84-89 In Manolis, S.C.; Stevenson, C. (eds) Crocodiles. Status Survey and Conservation Action Plan, 3rd edn. Crocodile Specialist Group, Darwin. | 2010 |