Roebuck, Deborah Britt
Communication strategies for today's managerial leader
Business Expert Press, 2012
 Buku Teks
Schiller, Bradley R.
The Economy today/ Bradley R. Schiller
Random House of Canada, 1980
 Buku Teks
Schiller, Bradley R.
The economy today/Bradley R. Schiller
McGraw-Hill , 1997
 Buku Teks
Palan, Ronen
State strategies in the global political economy
Pinter, 1999
 Buku Teks
Schiller, Bradley R.
The micro economy today / Bradley R. Schiller
Irwin Mc Graw-Hill , 1997
 Buku Teks