Cook, Ben. Federated States of Micronesia and Palau. Other Places Publishing, 2010. ISBN0982261934, 9780982261934. p. 207. " Only about 8% of Palauans practice Modekngei, most of whom reside in the same village, Ibobang. This small town of less than 100 in Ngatpang state[...]"
Snyder, David.; Adams, William Hampton; Butler, Brian M. (1997). Archaeology and historic preservation in Palau. Anthropology research series / Division of Cultural Affairs, Republic of Palau 2. San Francisco: U.S. National Park Service.
