Gemiansoom_Normdatei
Library_of_Congress_Control_Number
Virtual_International_Authority_File
Bibliothèque_nationale_de_France
International_Standard_Name_Identifier
National_Diet_Library
Système_universitaire_de_documentation
IMDb
National_Library_of_the_Czech_Republic
National_Library_of_Australia
Biblioteca_Nacional_de_España
MusicBrainz
BIBSYS
LIBRIS
Sjiisk_Natsionaalbibleteek
Internet_Archive
Netherlands_Institute_for_Art_History
National_Center_for_Biotechnology_Information
JSTOR
Uurterbok
Jorge_Luis_Borges
Deensk_Köningelk_Bibleteek
Gottfried_Wilhelm_Leibniz
HighBeam_Research
Base_Léonore
Rüs_Natschunaalbibleteek
Holuns_Könangelk_Bibleteek
DBLP
Kozani
Pergament
Natsionaalbibleteek_faan_Aserbaidschaan