Barnes, Donald L., author
Burgess, 1969
Buku Teks
Jarolimek, John, author
Macmillan, 1968
Buku Teks
Ragan, William B., author
Applenton, 1964
Buku Teks
Yunia Selviliana, author
2012
UI - Skripsi (Open)
Renner, John W., author
Harper & Row, 1968
Buku Teks