Butterfield, H., author
Charles Scribner's Sons, 1950
Buku Teks
Robertson, John M., author
Watts & Co, 1931
Buku Teks
Collins, Michael, author
Kanisius, 2006
Buku Referensi
Jan Sinar Aritonang, Karel Steenbrink, editor
Brill, 2008
Buku Teks
Leroux, Jean-Marie, author
Notre Dame, 1963
Buku Teks