Robert Cribb (2002). "Unresolved Problems in the Indonesian Killings of 1965–1966". Asian Survey. 42 (4): 550–563. doi:10.1525/as.2002.42.4.550.; Friend (2003), page 107-109, 113.
Robert Cribb, "Genocide in Indonesia, 1965–1966," Journal of Genocide Research 3 no. 2 (June 2001), pp. 219–239; Ricklefs (1991), p. 288; Friend (2003), p. 113; Vickers (2005), p. 159; Robert Cribb (2002). "Unresolved Problems in the Indonesian Killings of 1965–1966". Asian Survey. 42 (4): 550–563. doi:10.1525/as.2002.42.4.550.