Ceinion y cysegr =
Gems of the sanctuary ; tonau Cymreig enwog = famous Welsh tunes /
dewiswyd a golywyd gan = selected and edited by W.S. Gwynn Williams.

APA Citation

Gwynn Williams, W. S. (William Sidney). (1944). Ceinion y cysegr =: Gems of the sanctuary ; tonau Cymreig enwog = famous Welsh tunes. Llangollen: Gwynn.

MLA Citation

Gwynn Williams, W. S. (William Sidney), 1896-1978. Ceinion Y Cysegr =: Gems of the Sanctuary ; Tonau Cymreig Enwog = Famous Welsh Tunes. Llangollen: Gwynn, 1944.

Warning: These citations may not always be complete (especially for serials).