1
Cyhoeddwyd 2005
Full text available from Linguistics Database: 01/01/2017 to present
Electronig Cyfresol
3
Cyhoeddwyd 1995
Full text available from PRISMA Database with HAPI Index: 01/01/2013 to present
Electronig Cyfresol
8
Cyhoeddwyd 2012
Full text available from Psychology Database: 01/01/2012 to present
Electronig Cyfresol
9
Full text available from Linguistics Database: 01/01/2004 to present
Electronig Cyfresol
16
Cyhoeddwyd 1991
Full text available from Research Library: 01/01/2006 to present
Electronig Cyfresol