Rosen, George, author
University California Press, 1966
Buku Teks
Epstein, T. Scarlett, author
Manchester University Press , 1962
Buku Teks
Neale, Walter C., author
Yale University Press, 1962
Buku Teks
Seagul Books, 2007
Buku Teks
Carl C. Taylor ... [and others]
Orient Longmans, 1965
Buku Teks