Livadas, Panos E.
Prentice/Hall International, 1990
Buku Teks
Glossbrenner, Alfred
McGraw-Hill, 1993
Buku Teks
Nemeth, Evi
Prentice-Hall, 1989
Buku Referensi
Bach, Maurice J.
Prentice-Hall, 1986
Buku Teks
Bach, Maurice J.
Prentice-Hall, 1986
Buku Teks