African masks

/ Bleakley, Robert

1978

Afrikas konst

/ Schmalenbach, Werner

1955

Black Africa : masks, sculpture, jewelr

/ Meyer, Laure

1992

Masks of black Africa

/ Segy, Ladislas

1976

Afrikanske masker

/ Holmsted, Leif Birger

2003 

Primitive secret societies : a study in early politics and religion.

1968

Contemporary spiritualities : social and religious contexts

/ Clive & Jane Erricker

2001