1. So respetamos una tradición del uno al otro;Aaron;Span. Context,2004
2. Pragmatic Markers in Contrast;Aijmer,2006
3. Pragmatic markers;Aijmer,2011
4. Modern Arabic Sociolinguistics. Diglossia, Variation, Codeswitching, Attitudes and Identity;Albirini,2016
5. Pragmatic Markers and Sociolinguistic Variation;Andersen,2001