Harris, Thomas E., author
Pearson, 2011
Buku Teks
Wellington, Pat, author
Institute of South East Asia Studies, 2009
eBooks
edited by Eduardo Salas, William Brandon Vessey, Lauren Blackwell Landon
Emerald, 2017
eBooks
Sugars, Breadley J.
McGraw-Hill, 2006
Buku Teks
Thompson, Leigh L., author
Pearson/Prentice Hall, 2004
Buku Teks