21
by Story
Published 1965
22
by Bush
Published 1959
23
by Dilts
Published 1963
24
by Kennedy
Published 1963
25
26
by Ojong
Published 2001
27
Published 1946
28
by Kotter
Published 1998
29
Published 2017
30
31
Published 2003
32
33
by ?Omae, Kenʼichi, 1943-
Published 1987
34
by Lim, Hua Sing.
Published 2003
35
36
by Yoneyama, Shoko.
Published 1999
37
Published 1993
38
39
by Corner, E. J. H
Published 1981
40