Basic Books, Inc Publisher, 1966
Buku Teks
E.Zaleski
Organisation for Economic Cooperation and Development, 1969
Buku Teks
Westview Press, 1991
Buku Teks
Piscesia Dwi Ratih, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2012
UI - Skripsi (Open)
Logman Cheehire, 1978
Buku Teks