[M. Staegart, Brussels, Belgium, until 1977]; Fred and Rita Richman, New York, 1977–1988
Feldman, J., ed. The Eloquent Dead: Ancestral Manifestations in the Art of Nias Island. Los Angeles: Museum of Cultural History, University of California, Los Angeles, 1985, pp. 45-78.
Taylor, Paul Michael, and Lorraine Aragon. Beyond the Java Sea: Art of Indonesia's Outer Islands. Washington, D.C.: National Museum of Natural History, Smithsonian Institution, 1991, Pg. 72-87.