edited by James B. Grace, David Tilman
Academic Press , 1990
Buku Teks
Reno Agassi, author
2017
UI - Skripsi Membership
Pakes, Anthony G., author
Cambridge University Press , 1990
Buku Teks
Artikel Jurnal
Galston, Arthur W., author
Prentice-Hall, 1968
Buku Teks