1. Alexander, J. (1974). The world situation. In P. Rahtz (Ed.), Rescue archaeology (pp. 16–27). London: Harmsworth-Penguin.
2. Baldwin, G. (1966). Race against time: The story of salvage archaeology. New York: G.P. Putnam’s Sons.
3. Barham, L., & Mitchell, P. (2008). The first Africans. Cambridge: Cambridge University Press.
4. Cleere, H. (Ed.). (1989). Archaeological heritage management in the modern world. London: Unwin Hyman.
5. Evans, C. & Sorensen, M.L. (2010) Citade Velha: Cape Verde Islands.