1
by Babbie, Earl R.
Published 1986
2
3
by Levine, Joel H.
Published 1993
4
5
6
Published 1992
7
Published 2007
8
by Babbie, Earl R.
Published 2010
9
by Zigenfuss
Published 1985
10
by Abdul Rahman Embong
Published 2010
11
by Qasim Ahmad
Published 2000
12
by Tham, Seong Chee.
Published 1981
13
14
15
by Abbott, Owen
Published 2020