Greulach, Victor A., author
John Wiley & Sons, 1966
Buku Teks
Cronquist, Arthur, author
Harper and Row, 1982
Buku Teks
Fuller, Harry J., author
Holt Rinehart and Winston, 1963
Buku Teks
Dutta, A.C., author
Oxford University Press, 1994
Buku Teks
Wilson, Carl L., author
Holt, Rinehart and Winston, 1962
Buku Teks