Pauline, Lawrence J
Cambridge book comp, 1968
Buku Teks
Stephen J. Wayne [et all.]
Thomson, 2005
Buku Teks
Edward, David V.
Prentice-Hall, 1982
Buku Teks
Rossabi, Morris, author
Wiley Balckwell, 2014
Buku Teks
Didik J. Rachbini, author
CIDES, 1996
Buku Teks