Não informado. (1976). Management and Marketing Abstracts. Pira International.
Lua i Stíl Chicago (17ú heag.)Não informado. Management and Marketing Abstracts. Surrey, Inglaterra: Pira International, 1976.
Lua MLA (8ú heag.)Não informado. Management and Marketing Abstracts. Pira International, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.