Gaya APA

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

Gaya MLA

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