Westing, John Howard, author
Prentice-Hall, 1957
Buku Teks
Kennedy, John E, author
Bhuana Ilmu Populer, 2006
Buku Teks
Fisk, Peter, author
Elex Media Komputindo, 2006
Buku Teks
Gordon Wills ... [and others]
Pan Books, 1975
Buku Teks
Hinkle, Charles L
Mc Graw Hill, 1975
Buku Teks