Gaya APA

Fredlund, D, G., Rahardjo, H. (1993). Soil Mechanics For Unsaturated Soils . New York: John Wiley & Sons.

Gaya MLA

Fredlund, D., G.., Rahardjo, H.. "Soil Mechanics For Unsaturated Soils". New York: John Wiley & Sons, 1993. Text.