1
Published 1980
2
by Fewsmith, Joseph, 1949-
Published 1994
3
Published 1992
4
Published 1997
5
Published 1993
6
Published 1977
7
Published 1995
8
9
10
by Fishman, Ted C, 1958-
Published 2005
11
12
by Kotler, Philip
Published 2000
13
by Tan, Gerald
Published 1992
14
Published 1994
15
by Figgie, Harry E.
Published 1993
16
by Siegler, Heinrich
Published 1969
17
18
by Sieh Lee Mei Ling
Published 2000
19
by Shin, Dong-Myeon, 1966-
Published 2003
20
by Lim, Hua Sing
Published 1994