Kelly, Gery F., author
McGraw-Hill, Higher Education, 2008
Buku Teks
Steele, James, author
Phaidon Press, 1997
Buku Teks
Buckley, Roger, author
Cambridge University Press, 1990
Buku Teks
International Society for Educational Information, 1989
Buku Teks
Miller, Roger LeRoy, author
Pearson education, 2010
Buku Teks