Hokanson, Clifford M., author
Interstate Printers, 1984
Buku Teks
Brumfiel, Charles Francis, 1914-, author
Addison-Wesley , 1963
Buku Teks
Brumfiel, Charles Francis, 1914-, author
California State Department of Education , 1965
Buku Teks
Stroud, K. A.
Erlangga, 2001
Multimedia
Stark, Thomas J., author
Benjamin Cumming, 1984
Buku Teks