↑In this discussion of a politician woman from Alagoas state it is possible to notice that the "r" in this position is a voiceless glottal fricative http://www.youtube.com/watch?v=oKoGPP0ntz0
↑Gordon, Raymond G., Jr. (2005). "Portuguese". Ethnologue: Languages of the World, Fifteenth edition. SIL International. Retrieved 2008-10-15. Population total all countries: 177,457,180CS1 maint: Multiple names: authors list (link)
↑"Portuguese Language". Microsoft Encarta Online Encyclopedia. Microsoft Corporation. 2008. Archived from the original on 2009-02-21. Retrieved 2008-10-15. about 221 million speakers
↑Lusa angency (2008). "Portuguese". Archived from the original on 2009-02-04. Retrieved 2009-01-15. Portuguese Total 2008