Monsen, R. Joseph
The business world introduction to business readings
Houghton Mifflin, 1967
Buku Teks
Cooper, Donald R.
Business research methods
McGraw-Hill, 2001
Buku Teks
Cooper, Donald R.
Business research methods
McGraw-Hill, 2014
Buku Teks
Cooper, Donald R.
Business research methods
McGraw-Hill, 2006
Buku Teks
Cooper, Donald R.
Business research methods
Irwin/McGraw-Hill, 1998
Buku Teks