APA (7th ed.) Citation

Hoek, E., & Bray, J. (1981). Rock slope engineering (Revised 3rd ed.). Institution of Mining and Metallurgy.

Chicago Style (17th ed.) Citation

Hoek, Evert, and John Bray. Rock Slope Engineering. Revised 3rd ed. London: Institution of Mining and Metallurgy, 1981.

MLA (9th ed.) Citation

Hoek, Evert, and John Bray. Rock Slope Engineering. Revised 3rd ed. Institution of Mining and Metallurgy, 1981.