Harsja W. Bachtiar, 1934-
[publisher not identified], [date of publication not identified]
Buku Teks
Stebbins, Robert A.
Sage, 2001
Buku Teks
Rose, Arnold M.
University of Minnesota Press, 1954
Buku Teks
edited by H.M. Blalock
Aldine Publishing, 1974
Buku Teks
Hays, William Lee, 1926-1995
Holt, Rinehart and Winston, 1973
Buku Teks