Não informado. (1978). Rural Extension, Education and Training Abstracts. Commonwealth Agricultural Bureau.
Lua i Stíl Chicago (17ú heag.)Não informado. Rural Extension, Education and Training Abstracts. Farnham Royal, Inglaterra: Commonwealth Agricultural Bureau, 1978.
Lua MLA (8ú heag.)Não informado. Rural Extension, Education and Training Abstracts. Commonwealth Agricultural Bureau, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.