Agency for Agricultural Research and Development, 1992
Buku Teks
Agency for Agricultural Research and Development Ministry of Agriculture, 1992
Buku Referensi
Booth, Anne, author
Allen and Unwin, 1988
Buku Teks
Lepi T. (Tanadjaja) Tarmidi, author
2006
Artikel Jurnal
Flo. Academic Press , 1980
Buku Teks