APA (7th ed.) Citation

Hoek, E., & Bray, J. (1977). Rock slope engineering (2nd rev.ed.). Institution of Mining & Metallurgy.

Chicago Style (17th ed.) Citation

Hoek, Evert, and John Bray. Rock Slope Engineering. 2nd rev.ed. London: Institution of Mining & Metallurgy, 1977.

MLA (9th ed.) Citation

Hoek, Evert, and John Bray. Rock Slope Engineering. 2nd rev.ed. Institution of Mining & Metallurgy, 1977.