Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Hoek, Evert, y John L. Bray. Rock Slope Engineering. 2nd ed. The Institution of Mining and Metallurgy, 1977.