edited by Stefan Ryser and Marecel Weber
Editiones Roche, Basel, 1991
Buku Teks
Levin, Morris A.
McGraw-Hill, 1991
Buku Teks
Hubbell, Sue, author
Houghton Miffiln, 2001
Buku Teks
Life Science Inter University Center, Faculty of Graduate Studies, Bogor Agricultural University, 1990
Buku Referensi
Artikel Jurnal