1
2
Cyhoeddwyd: 2007.
3
Cyhoeddwyd: 2013.
Links: Cael y testun llawn
4
Cyhoeddwyd: [2016]
Superior document: Title is part of eBook package: De Gruyter UTP eBook-Package Backlist 2000-2015
Links: Cael y testun llawn; Cover
5
Cyhoeddwyd: [2022]
Superior document: Title is part of eBook package: De Gruyter Edinburgh University Press Backlist eBook-Package 2013-2000
Links: Cael y testun llawn; Cael y testun llawn; Cover
6
Cyhoeddwyd: [2022]
Superior document: Title is part of eBook package: De Gruyter Edinburgh University Press Backlist eBook-Package 2013-2000
Links: Cael y testun llawn; Cael y testun llawn; Cover