Mires, Charlene
University of Pennsylvania Press, 2002
Buku Teks
Cut Fatimah Purnamasari, author
Fakultas Teknik Universitas Indonesia, 1993
UI - Skripsi (Membership)
Universitas Indonesia, 1991
UI - Tugas Akhir
Pushkin, Aleksandr Sergeyevich, author
Foreign Language Publishing House, 1954
Buku Teks
Goncharov, Ivan
London David Campbell Publishers Ltd 1992,
Buku Teks