Rheolaeth_awdurdod
PubMed
Adnabyddwr_gwrthrychau_digidol
Llyfrgell_Genedlaethol_Cymru
Gwasg_Prifysgol_Rhydychen
Y_Gymdeithas_Frenhinol
Gwasg_Prifysgol_Cymru
Cyfnodolyn_academaidd
The_Lancet
Y_Cyngor_Prydeinig
Y_Gymdeithas_Frenhinol_er_Gwarchod_Adar
Rhif_Cyfres_Safonol_Rhyngwladol
Entrez
Mesh_ID
JSTOR
Foreign_Affairs
Crynodeb
Adolygiad_llenyddol
Cymdeithas_Feddygol_Prydain
ArXiv
ResearcherID
Archaeologia_Cambrensis
Montgomeryshire_Collections
Y_Cymmrodor
International_Affairs
Zeitschrift_für_celtische_Philologie
The_Burlington_Magazine
Efrydiau_Athronyddol
Cylchgrawn_Hanes_Cymru
Boreas
Archif_Anna
Bathafarn_(cylchgrawn)
Ceredigion_(cylchgrawn)
Morgannwg_(cyfnodolyn)
Rhestr_cyfnodolion_cysylltiadau_rhyngwladol
International_Relations
Studia_Celtica
Minerva_(cylchgrawn)
Pembrokeshire_Historian
Political_Science_Quarterly
World_Politics
Journal_of_Welsh_Religious_History
Society_for_Renaissance_Studies
International_Studies_Quarterly
Brycheiniog_(cylchgrawn)
Journal_of_the_Welsh_Bibliographical_Society
Cambria_(cylchgrawn_daearyddol)
International_Security
Mammal_Review
Review_of_International_Studies
Security_Studies
Cylchgrawn_Llyfrgell_Genedlaethol_Cymru