Leiden University Library, 2007
Buku Teks
Universiteitsbibliotheek (Leyde, Pays-Bas)
Leiden University Library, 2007
Buku Teks
Leiden University Press, 1998
Buku Referensi
Leiden University Press, 2007
Buku Referensi
compiled by Teuku Iskandar
Documentatieburean Islam-Christendom , 1999
Buku Referensi