Blanchard, Benjamin S., author
Pearson Education Limited, 2014
Buku Teks
Blanchard, Benjamin S., author
Prentice-Hall, 2006
Buku Teks
Sudarsono Hardjosoekarto, author
UI-Press, 2012
Buku Teks
Whittington, R.P., author
Clarendon Press , 1988
Buku Teks
Fraas, Arthur P., author
McGraw-Hill, 1982
Buku Teks