1
by Guttsman, W. L.
Published 1963
2
3
by Seligman, Lester G.
Published 1964
4
by Lindblom, Charles Edward
Published 1993
5
by Raby, D. L, 1944-
Published 2006
6
Published 1995
7
by Hinnebusch, Raymond A.
Published 1990
8
by Kemp, David Alistair, 1941-
Published 1988