Rubin, Arnold, Figurative Sculptures of the Niger River Delta, (Los Angeles: Gallery K, Inc., 1976), cover, p. 8, no. 1.
Silverman, Melvin, "Figurative Sculptures of the Niger River Delta," African Arts 10, no. 2 (1977), 73.
Anderson, Martha G. and Philip M Peek, eds., Ways of the Rivers: Arts and Environment of the Niger Delta (Los Angeles: UCLA Fowler Museum of Cultural History, 2002), p. 109, fig 3.17 a, b.
Dreyfus, Renée, De Young: Selected Works (San Francisco: Fine Arts Museums of San Francisco, 2005), 22.
Fine Arts Museums of San Francisco, Africa, Oceania, the Americas, and the Jolika Collection of New Guinea Art: Highlights From a Decade of Collecting (San Francisco: Fine Arts Museums of San Francisco, 2009), p.16.
Roberts, Mary Nooter, “The Inner Eye: Vision and Transcendence in African Arts,” African Arts 50, no. 1 (2017), p. 73, fig. 27.
Nguyen, Arthur, "A Conversation With Dr. Polly Nooter Roberts on the Inner Eye," interview with Dr. Polly Nooter Roberts in Insider - Los Angeles County Museum of Art 11 no. 2 (Spring 2017), p. 16, fig. 6.
Karlstrom, Ann Heath, Devorah Major and Kim Shuck, Fine Arts Museums of San Francisco, deYoung 125 (California: Cameron + Company, 2021), p. 297, no. 121.