Silvertown, Jonathan W., author
Longman, 1987
Buku Teks
Chronica Botanica , 1945
Buku Teks
Novak, Viliam, author
Springer, 2012
eBooks
Bausbacher, Ed, author
Prentice-Hall, 1993
Buku Teks
editor, Gilberto Francisco Martha de Souza
Springer-Verlag, 2012
eBooks