Davis, Simon J.M.
Routledge , 1995
Buku Teks
Downer, John
Sterling Pub. Co., 1999
Buku Referensi
Hurtsthouse, Rosalind, author
Routledge, 2000
Buku Teks
Williams, Marta, author
New World Library, 2003
Buku Teks
Mellisa Anggiarti, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2013
UI - Skripsi (Membership)