Strahler, Arthur N., author
John Wiley & Sons, 1975
Buku Teks
Broek, Jan O.M., author
McGraw-Hill, 1978
Buku Teks
Freeman, T.W., author
Hutchinson University Library, 1974
Buku Teks
edited by Otis W. Freeman and John W. Morris
McGraw-Hill, 1958
Buku Teks
Maguire, David J., author
Wiley, 1989
Buku Teks