Gregory, Derek, author
McGraw-Hill , 1978
Buku Teks
Runyon, Richard P., author
Ill. Richard D. Irwin , 1982
Buku Teks
Freund, John E., author
Pearson Education, 2007
Multimedia
Freund, John E., author
Prentice-Hall, 1980
Buku Teks
Hamburg, Morris, author
Harcourt Brace Jovanovick, 1985
Buku Teks