McKernan, Michael
Nelson, 1984
Buku Teks
Thistlethwaite, Frank
Cambridge University Press, 1955
Buku Teks
Mahoney, Tom
Harper & Row, 1966
Buku Teks
Nada, Takashi
Foreign Languages Publishing House, 1984
Buku Teks
Handlin, Oscar
An Atlantic Monthly Press Book, 1973
Buku Teks