1
by Halliday
Published 1992
2
by Cunningham
Published 1993
3
by Pearce
Published 1992
4
5
by Martel
Published 1986
6
7
by Lowe
Published 1972
8
9
by Jones
Published 1986
10
by Fromkin
Published 1989
11
by Roberti
Published 1994
12
13
by Hopwood
Published 1989
14
Published 2001
15
16
by Pieragostini
Published 1991
17
Published 1998
18
by Perry, 1937-
Published 1990
19
by Smith, 1947-
Published 1990
20
by Roberts
Published 1991