Alexander, Martin
Introduction to soil microbiology
John Wiley & Sons, 1977
 Buku Teks
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
Scott, C. R.
An introduction to soil mechanics and foundations / C. R. Scott.
Applied Science Publishers Ltd, 1974
 Buku Teks
Atkinson, John
An introduction to the mechanics of soils and foundations : through critical state soil mechanics
McGraw-Hill, 1993
 Buku Teks