Luckett, Dudley G.
McGraw-Hill , 1984
Buku Teks
Pesek, Boris P.
Harvester. Wheatshaf, 1988
Buku Teks
Barger, Harold
Rand McNally, 1969
Buku Teks
Suzuki, Yoshio
Yale University Press, 1980
Buku Teks
Cathcart, Charles D.
Richard D. Irwin, 1982
Buku Teks