Rigney, P. I. (1930). Manual instruction in primary schools.
Lua i Stíl Chicago (17ú heag.)Rigney, P. Ivers. Manual Instruction in Primary Schools. 1930.
Lua MLA (9ú heag.)Rigney, P. Ivers. Manual Instruction in Primary Schools. 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
