Tappan, Helen
W H Freeman, 1980
Buku Teks
Taylor, Thomas N., author
McGraw-Hill, 1981
Buku Teks
Arnold, Chester R.
Tata McGraw-Hill, 1977
Buku Teks
Arnold, Chester A., author
Tata McGraw-Hill, 1979
Buku Teks
Abramoff, Peter, author
Prentice-Hall, 1968
Buku Teks