Integrated_Authority_File
Library_of_Congress_Control_Number
Virtual_International_Authority_File
Bibliothèque_nationale_de_France
IMDb
International_Standard_Name_Identifier
National_Diet_Library
Leabharlann_Nàiseanta_Poblachd_na_Seice
Système_universitaire_de_documentation
Biblioteca_Nacional_de_España
National_Library_of_Australia
BIBSYS
MusicBrainz
LIBRIS
CiNii
Acadamh_Nàiseanta_nan_Saidheans
Leabhar-eòlais
Roger_Martin_du_Gard
RKD_-_Institiud_na_Tìrean_Ìsle_airson_Eachdraidh_Ealain
KulturNav
Andrew_Carnegie
WikiLeaks
ArXiv
Leabharlann_Nàiseanta_na_h-Alba
Leabharlann_Nàiseanta_na_Cuimrigh
Fo-sgrìobhadh
Adhamh_MacFhearghais
Gottfried_Wilhelm_Leibnitz
Leabharlannaiche
École_nationale_des_chartes
Leabharlann_Bàrdachd_na_h-Alba