Alofs; Liverpool; Taphorn; Bernard; and Lopez-Fernandez (2013). "Mind the (information) gap: the importance of exploration and discovery for assessing conservation priorities for freshwater fish". Diversity and Distributions20 (1): 1–7. doi:10.1111/ddi.12127. ISSN1366-9516.
feow.org
Hales, J., and P. Petry: Essequibo. Freshwater Ecoregions of the World. Retrieved 24 May 2014.
worldcat.org
Alofs; Liverpool; Taphorn; Bernard; and Lopez-Fernandez (2013). "Mind the (information) gap: the importance of exploration and discovery for assessing conservation priorities for freshwater fish". Diversity and Distributions20 (1): 1–7. doi:10.1111/ddi.12127. ISSN1366-9516.