Plant resources of South-East Asia no.18, plants producing exudates
E. Boer, editor
Backhuys Publishers, 2000
 Buku Teks SO
Plant resources of South-East Asia no.17, Fibre plants
editors, M. Brink, R.P. Escobin
Backhuys , 2003
 Buku Teks SO
Plant resources of South-East Asia 19, essential-oil plant
edited by L.P.A. Oyen, Nguyen Xuan Dung
Prosea, 1999
 Buku Teks SO
Plant resources of South-East Asia no.15 (2), cryptoogams : ferns and fern allies / Editor: W.P. de Winter
Prosea Foundation, 2003
 Buku Teks
Conservation of plant genes : DNA banking and in vitro biotechnology
edited by Robert P. Adams and Jenice E. Adams
Academic Press, 1992
 Buku Teks