Watson, David L., author
Scott, Foresman, 1984
Buku Teks
Kukla, Andre, author
[publisher not identified], 2000
Buku Teks
Weinberg, Meyer, author
Prentice-Hall, 1959
Buku Teks
Natanson, Maurice, author
Random House, 1963
Buku Teks
edited by Anton van Harskamp
Routledge, 1996
Buku Teks