McIntosh, Jane, author
Checkmark Books, 1999
Buku Referensi
Sexton, John, author
M. Evans and Company, 1986
Buku Teks
Bode, Boyd Henry
D.C Heath and Company, 1940
Buku Teks
Maxwell, Nancy Irwin, author
Jones & Bartlett Learning, 2014
Buku Teks
Murdin, Paul, author
Thames & Hudson, 2009
Buku Referensi