Langenbach, Robert G., author
Prentice-Hall, 1968
Buku Teks
Spencer, Donald D., author
Charles E. Merrill, 1982
Buku Teks
Orilia, Lawrence S., author
McGraw-Hill, 1982
Buku Teks
Popkin, Gary S., author
Mifflin Company, 1981
Buku Teks
Vazsonyi, Andrew, author
Richard D. Irwin, 1980
Buku Teks