Ryder, John D. (John Douglas), author
McGraw-Hill, 1957
Buku Teks
Dempsey, John A.
Addison-Wesley, 1977
Buku Teks
Carran, Drew R.
David & Charles, 1971
Buku Teks
Malvino, Albert Paul, author
McGraw-Hill, 1993
Buku Teks
Charles A. Harper, editor-in-chief
McGraw-Hill, 1977
Buku Referensi