Walker, K. Polymer Clay Buttons. Search Press(UK).
Lua i Stíl Chicago (17ú heag.)Walker, Karen. Polymer Clay Buttons. Search Press(UK).
Lua MLA (8ú heag.)Walker, Karen. Polymer Clay Buttons. Search Press(UK).
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.