Não informado. (1959). Tropical Science. Tropical Products Institute.
Lua i Stíl Chicago (17ú heag.)Não informado. Tropical Science. London: Tropical Products Institute, 1959.
Lua MLA (8ú heag.)Não informado. Tropical Science. Tropical Products Institute, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.