Muzaffar, Chandra
A plea for empathy : the quest for Malaysian unity
Zubedy Ideahouse, 2010
 Buku Teks SO
Somani, L.L.
Dictionary of weed science
Agrotech Publishing Academy, 1992
 Buku Referensi
Weed control in small farms
editors, Mohamad Soerjani, D. E. Barnes, T. O. Robson
Asian-Pasific Weed Science Society, 1982
 Buku Teks SO
Zimdahl, Robert L.
Fundamentals of weed science
Academic Press , 1993
 Buku Teks SO
Part-timer's plea: where am i now?
 Artikel Jurnal