Luckett, Dudley G.
McGraw-Hill , 1984
Buku Teks
Chandler, Lester Vernon, 1905-
Harper & Row , 1959-1973
Buku Teks
Auerbach, Robert D.
Macmillan, 1989
Buku Teks
Miller, Roger LeRoy
McGrow-Hill, 1985
Buku Teks
Simpson, Thomas D.
Prentice-Hall, 1987
Buku Teks