editor in-chief, John E. Jessup and Louise B. Ketz
Charles Scribner`s Sons, 1994
Buku Referensi
Walker, Peter, author
MIT Press, 1998
Buku Teks
Thompson, William Fletcher, 1929-, author
Louisiana State University Pres, 1994
Buku Teks
Walker, Peter, author
MIT Press, 1998
Buku Teks
Artikel Jurnal