Não informado. (1953). Journal of the West African Institute for Oil Palm Research. West African Institute for Oil Palm Research.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of the West African Institute for Oil Palm Research. Benin City, Nigeria: West African Institute for Oil Palm Research, 1953.
Lua MLA (8ú heag.)Não informado. Journal of the West African Institute for Oil Palm Research. West African Institute for Oil Palm Research, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.