Arnold, George T., author
McGrawHill, 1996
Buku Referensi
Weeks, Edward, author
Writer`s Digest Books, 1962
Buku Teks
Jacobs, Hayes B., author
Writer`s Digest Books, 1968
Buku Teks
Riebel, John P., author
Arco, 1978
Buku Teks
Ricketson, Matthew, author
Allen & Unwin, 2017
Buku Teks