Holander, Edwin P.
Oxford University Press , 1981
Buku Teks
Yoder, Dale, author
Prentice-Hall, 1962
Buku Teks
Summers, Donald B., author
McGrw-Hill , 1981
Buku Teks
Heckman, I. L., author
Charles E. Merrill, 1962
Buku Teks
Schleh, Edward C., author
Prentice-Hall, 1958
Buku Teks