Isaacs, Harold R.
Standford University Press, 1951
Buku Teks SO
Isaacs, Harold R.
Atheneum, 1968
Buku Teks SO
Ho Kan-Chih
Peking: Foreign Language Press, 1959
Buku Teks
Bianco, Lucien
Stanford University Press, 1971
Buku Teks SO
Hinton, William
Vintage Books, 1966
Buku Teks SO