Marginean, I., Precupetu, I., Tzanov, V., & European Foundation for the improvement of living and working conditions. (2006). First European quality of life survey: Quality of life in Bulgaria and Romania. Λουξεμβούργο: Υπηρεσία Επισήμων Εκδόσεων των Ευρωπαϊκών Κοινοτήτων.
Παραπομπή Chicago StyleMarginean, Ioan., Iuliana Precupetu, Vassil Tzanov, and European Foundation for the improvement of living and working conditions. First European Quality of Life Survey: Quality of Life in Bulgaria and Romania. Λουξεμβούργο: Υπηρεσία Επισήμων Εκδόσεων των Ευρωπαϊκών Κοινοτήτων, 2006.
Παραπομπή MLAMarginean, Ioan., Iuliana Precupetu, Vassil Tzanov, and European Foundation for the improvement of living and working conditions. First European Quality of Life Survey: Quality of Life in Bulgaria and Romania. Λουξεμβούργο: Υπηρεσία Επισήμων Εκδόσεων των Ευρωπαϊκών Κοινοτήτων, 2006.