Gaya APA

Wright, Stephen G., Duncan, J. M.. (2005). Soil strength and slope stability . : John Wiley & Sons.

Gaya Chicago

Wright, Stephen G., Duncan, J. M.. Soil strength and slope stability. : John Wiley & Sons, 2005. Text.

Gaya MLA

Wright, Stephen G., Duncan, J. M.. Soil strength and slope stability. : John Wiley & Sons, 2005. Text.

Gaya Turabian

Wright, Stephen G., Duncan, J. M.. Soil strength and slope stability. : John Wiley & Sons, 2005. Print.