Kaplan, Jeffrey P., author
Prentice Hall International, 1995
Buku Teks
Scharfstein, Zevi, author
America : Shilo Publishing House, 1073
Buku Referensi
Riskawati, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2011
UI - Skripsi (Open)
Badawi, El-Said, author
Routledge, 2004
Buku Referensi
Young-Key, author
Routledge, 2009
Buku Teks