Cerver, Francisco Asensio, author
Arco Editorial, [1997]
Buku Teks
Tromp, Heimerick
Waanders, 1997
Buku Teks
Gluck, Peter L., author
Rockport Publishers, 1997
Buku Teks
Savage, Charles C.
University of Missouri Press, 1987
Buku Teks
Grant, Michael
Charles Scribner's Sons, 1969
Buku Teks