Griffin, Ricky W.
Addison-Wesley, 1995
Buku Teks
Matthews, R.C.O.
University of Chicago Press, 1959
Buku Teks
Griffin, Ricky W.
Pearson Education International, 2006
Buku Teks
Griffin, Ricky W.
Prentice-Hall, 1999
Buku Teks
Griffin, Ricky W.
Prentice-Hall, 2002
Buku Teks