Tromp, Heimerick, compiler
Waanders, 1997
Buku Teks
Gluck, Peter L.
Rockport Publishers, 1997
Buku Teks
Savage, Charles C.
University of Missouri Press, 1987
Buku Teks
Grant, Michael
Charles Scribner's Sons, 1969
Buku Teks
Domenech, Lluis
Konemann, 1999
Buku Referensi