^"Mazagão" (in Portuguese). Macapá, Amapá, Brazil: Governo do Estado do Amapá. 2011. Retrieved 2014-06-07.
^"Arqueologia de Mazagâo Velho". Site of the Department of Archaeology of the Federal University of Pernambuco, Brazil. Retrieved 2013-02-20. (in Portuguese; the coordinates are under the image of the map of Brazil on the page; to see them pass your cursor over the image)