Heller, Agnes
Routledge & Kegan Paul, 1982
Buku Teks
Gijsen, Marnix
Nijgh & Van Ditmar, [date of publication not identified]
Buku Teks
Agnes Jessica, author
Gramedia, 2004
Buku Teks
Raisha Shadrina, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2013
UI - Skripsi (Membership)
Seronsy, Cecil, author
Twayne, 1967
Buku Teks