Stephens, C. D., author
Wright, 1990
Buku Teks
edited by Eliakim Mizrahi
CRC Press, 2015
Buku Teks
Marriot, Bety Bowers, author
McGraw-Hill, 1997
Buku Referensi
Bahr, Nicholas J., author
CRC Press, 2015
Buku Teks
Barbara Carroll and Trevor Turpin ; with Adam Boyden, Alison Carroll, and Ruth Thomas
Thomas Telford, 2009
Buku Teks