APA
D.G F., H R. & M.D F. (2012). Unsaturated soil mechanics in engineering practice. USA: John Wiley & Sons.
Chicago
D.G Fredlund, H Rahardjo and M.D Fredlund. 2012. Unsaturated soil mechanics in engineering practice. USA: John Wiley & Sons.
Harvard
D.G F., H R. and M.D F. (2012). Unsaturated soil mechanics in engineering practice. USA: John Wiley & Sons.
MLA
D.G Fredlund, H Rahardjo and M.D Fredlund. Unsaturated soil mechanics in engineering practice. USA: John Wiley & Sons. 2012.
