Camougis, George, author
McGraw-Hill, 1981
Buku Teks
Marriot, Bety Bowers, author
McGraw-Hill, 1997
Buku Referensi
Westman, Walter E.
John Wiley & Sons, 1985
Buku Teks
Eccleston, Charles H., author
CRC Press, Taylor & Francis Group, 2011
Buku Teks
Barbara Carroll and Trevor Turpin ; with Adam Boyden, Alison Carroll, and Ruth Thomas
Thomas Telford, 2009
Buku Teks