Strahler, Arthur N., author
John Wiley & Sons, 1973
Buku Teks
Banks, Ferdinand E
Plenum Press, 1976
Buku Teks
Abbott, Patrick L., author
McGraw-Hill, 2009
Buku Teks
Keller, Edward A., author
Pearson-Prentice Hall, 2006
Buku Teks
Research and Development Center of Biology, 1998
Buku Teks