Biringer, Betty E., author
John Wiley & Sons, 2007
Buku Teks
Eccleston, Charles H., author
CRC Press, Taylor & Francis Group, 2011
Buku Teks
Bolton, Arthur, 1921-, author
McGraw-Hill, 1994
Buku Referensi
Stead, Alan, author
Facet Publishing, 2008
Buku Referensi
Giddens, Jean Foret, author
Elsevier, 2005
Buku Teks