Sulman, Elizabeth
Introduction to soil
Prentice-Hall, 1999
 Buku Teks
Interactive soil mechanics and foundations
John Wiley & Sons, 2007
 Multimedia
Characteristics of composted bio-toilet residue and its potential use as a soil conditioner
 Artikel Jurnal
The effect of water regime and soil management on methane emission reduction from rice field
 Artikel Jurnal
Pembuatan kompos jerami menggunakan mikroba perombak bahan organik
 Artikel Jurnal