Anabella Davila
Routledge, Taylor & Francis Group, 2009
Buku Teks
Daly, John L., 1952-, author
M.E. Sharpe, 2012
Buku Teks
Stone, Raymond J., author
John Wiley & Sons, 1995
Buku Teks
McGraw-Hill, Irwin, 2003
Buku Teks
Bohlander, George W., author
South Western Cengage Learning, 2013
Buku Teks