Avery, W. L. (1973). Indigenous worship in the churches of Sierra Leone.
Lua i Stíl Chicago (17ú heag.)Avery, William Leslie. Indigenous Worship in the Churches of Sierra Leone. Addis Ababa, 1973.
Lua MLA (8ú heag.)Avery, William Leslie. Indigenous Worship in the Churches of Sierra Leone. 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.