Pennings, F. (1994). Introduction to European social security law. Deventer: Kluwer law and taxation.
Чикагска система за цитиранеPennings, Frans. Introduction to European Social Security Law. Deventer: Kluwer law and taxation, 1994.
MLA формат за цитиранеPennings, Frans. Introduction to European Social Security Law. Deventer: Kluwer law and taxation, 1994.
Внимание: Тези цитати може да не са 100% точни.