Urwin, Derek W.

London ; New York : Longman, 1981.

Internet Archive >> None

Pegg, Carl H. (Carl Hamilton), 1905-

Chapel Hill : University of North Carolina Press, c1983.

Internet Archive >> None

Chicago : Edition Q, c1994.

Internet Archive >> None

London ; New York : Tauris Academic Studies ; New York : In the U.S.A. and in Canada distributed by St. Martin's Press, 1996.

Internet Archive >> None

Basingstoke [England] ; New York : Palgrave Macmillan, 2006.

Internet Archive >> None

Oxford ; Cambridge, Mass. : Blackwell Publishers, 1993.

Internet Archive >> None

Coffey, Peter

Aldershot, Hants, England ; Brookfield, Vt., USA : Elgar Pub., 1994.

Internet Archive >> None

Bertram, Christoph, 1937-

Washington, D.C. : Carnegie Endowment for International Peace, 1995.

Internet Archive >> None

Ackerman, Bruce A.

New Haven : Yale University Press, c 1992.

Internet Archive >> None

Brunn, Gerhard

Stuttgart : P. Reclam, c2002.

Internet Archive >> None