Galston, Arthur W.
Prentice-Hall, 1968
Buku Teks
Smith, C. Michael
Springer, 2005
Buku Teks
Agrios, George N.
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Buku Teks
Yasseen, Leonard C.
New York, NY, American Research Council
Buku Teks
edited by James B. Grace, David Tilman
Academic Press , 1990
Buku Teks