Weygandt, Jerry J., author
Buku Teks
Sutherland, Edwin H., author
Lippincott Company, 1960
Buku Teks
Case, Karl E., author
Prentice-Hall, 2004
Buku Teks
Case, Karl E., author
Prentice-Hall, 1996
Buku Teks
Case, Karl E., author
Prentice-Hall, 2002
Buku Teks