Não informado. (1980). International Petrochemical Developments. Rickian.
Lua i Stíl Chicago (17ú heag.)Não informado. International Petrochemical Developments. Palm Beach, Fla: Rickian, 1980.
Lua MLA (8ú heag.)Não informado. International Petrochemical Developments. Rickian, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
