Coyle, William
Wadsworth and Cengage Learning, 2013
Buku Teks
Hamilton, Alexander
Signet Classic, 1961
Buku Teks
Rychlo, M.A.
Highway Book Shop , 1977
Buku Teks
Tower, Ralph B.
Prentice-Hall, 1984
Buku Teks
Shanmugam, S. V.
Fakultas Sastra Universitas Indonesia , 1978
Buku Teks