Bedient, Philip B., author
PTR Prentice Hall, , 1994
Buku Teks
Rainville, Earl D.
Macmillan, 1981
Buku Teks
edited by Bill Cate
Directory Press, 1972
Buku Teks
McWhorter, David B., author
Water Resources Publications , 2010
Buku Teks
Wiley Blackwell, 2014
Buku Teks