Leach, Sid Del Mar
McGraw-Hill, 1983
Buku Teks
Pile, John F., author
H.N. Abrams, 1995
Buku Teks
Whiton, Sherrill, author
HarperCollins, 1974
Buku Teks
Hammer, Nelson R., author
Rockport, 1999
Buku Teks
Massachusetts: Rockport Publishers,, 1997
Buku Teks