Gaya APA

Anderson, M, &, R, K. (1987). Slope Stability Geotechnical Engineering and Geomorphology . United States of America: John Wiley & Sons Ltd..

Gaya MLA

Anderson, M.G., &, Richards,, K.S.. "Slope Stability Geotechnical Engineering and Geomorphology". United States of America: John Wiley & Sons Ltd., 1987. Text.