Syaiful Wahdi, author
Fakultas Teknik Universitas Indonesia, 1999
UI - Skripsi (Membership)
Minto Rahayu, author
Fakultas Teknik Universitas Indonesia, 1995
UI - Laporan Penelitian
The International Rice Research Institute, 1980
Buku Teks
Suprapto HS, author
Penebar Swadaya, 1985
Buku Referensi
Pracaya
Penebar Swadaya, 1995
Buku Teks