Duckson, Don W., author
McGraw-HIll, 1999
Buku Teks
Strahler, Arthur N., author
John Wiley & Sons, 1967
Buku Teks
Strahler, Arthur N., author
John Wiley & Sons, 1973
Buku Teks
Strahler, Arthur N., author
John Wiley & Sons, 1983
Buku Teks
Strahler, Arthur N., author
John Wiley & Sons, 1976
Buku Teks