1.
|
Charlotte, N.C. : Information Age Pub., 2012.
|
2.
|
New York : Columbia University Press, 2017. ©2017
|
3.
|
Mankon, Bamenda : Langaa Research & Publishing CIG, [2013] ©2013
|
4.
|
Oxfordshire, England ; New York : Routledge, 2015. ©2015
|
5.
|
London : printed by John Ward in Cornhill, 1758.
|
6.
|
London ; New York : Routledge, 1997.
|
7.
|
Washington, D.C. : Brookings Institution Press, 2013.
|
8.
|
Washington, D.C. : World Bank, 2012.
|
9.
|
Lanham, Md. : Lexington Books, c2011.
|
10.
|
Cambridge, Mass. : Harvard University Press, 2004.
|