Brey, Barry B., author
Pearson, 2014
Buku Teks SO
Brey, Barry B., author
Pearson-Prentice Hall, 2009
Buku Teks SO
Goody, Roy W.
New York Glencoe 1992,
Buku Referensi
Brey, Barry B., author
Pretice Hall, 1997
Buku Teks
Agustinus Pramana, author
Fakultas Teknik Universitas Indonesia, 2009
UI - Skripsi Open