Gaya APA

Sotir, R, B., Gray, D, H. (1996). Biotechnical and soil bioengineering slope stabilization / a practical guide for erosion control . : John Wiley n Sons.

Gaya MLA

Sotir, Robbin, B.., Gray, Donald, H.. "Biotechnical and soil bioengineering slope stabilization / a practical guide for erosion control". : John Wiley n Sons, 1996. Textbook.