"Norgeston" [2. التكوين النوعي والكمي] (بالإنجليزية). electronic Medicines Compendium. 2. Qualitative and quantitative composition. Archived from the original on 2016-03-04. Retrieved 2013-08-22.
web.archive.org
"Norgeston" [2. التكوين النوعي والكمي] (بالإنجليزية). electronic Medicines Compendium. 2. Qualitative and quantitative composition. Archived from the original on 2016-03-04. Retrieved 2013-08-22.