Doyle, William, author
Oxford University Press , 1989
Buku Teks
Tai, Hue-Tam Ho
Harvard University Press, 1992
Buku Teks
Bianco, Lucien, author
Stanford University Press, 1971
Buku Teks
Flinn, M.W., author
Longman, 1969
Buku Teks
Good, Yohn M
Heath, 1970
Buku Teks