Albrecht-Carrie, Rene
Peterson Littlefield, Adam & Co 1959
Buku Teks
Jurnal Kajian Wilayah Eropa Vol. 4 No. 3 2008: 41-56, 2008
Artikel Jurnal
O`Sullivan, Jeremiah Francis, 1903-, author
Appleton Century Croffs, 1943
Buku Teks
Theo Publishing,
Majalah, Jurnal, Buletin
Vauchez, Antoine, author
Palgrave Macmillan, 2016
Buku Teks