Painter, Richard W., author
Pluto Press, 1993
Buku Teks
Todd, Maria K.
CRC Press, Taylor & Francis Group, 2011
Buku Referensi
Lewis, Jack R., author
Prentice-Hall, 1982
Buku Referensi
Lock, C. B. Muriel, author
Clive Bingley, 1972
Buku Referensi
Shugar, Gershon J., author
McGraw-Hill, 1990
Buku Referensi