Paul Newman, Martha Ratliff, editor
Cambridge Uniiversity Press , 2001
Buku Teks
Cambridge University Press, 2001
eBooks
Dolbegae Publishers, 2007
Buku Referensi
Nelson, Stephen L.
Elex Media Komputindo , 1996
Buku Teks
Jatna Supriatna
Yayasan Pustaka Obor Indonesia, 2023
Buku Teks