Hoek, E., & Bray, J. (1981). Rock slope engineering (Rev. 3rd ed.). London ; New York: Institution of Mining and Metallurgy.
Παραπομπή Chicago StyleHoek, Evert, and John Bray. Rock Slope Engineering. Rev. 3rd ed. London ; New York: Institution of Mining and Metallurgy, 1981.
Παραπομπή MLAHoek, Evert, and John Bray. Rock Slope Engineering. Rev. 3rd ed. London ; New York: Institution of Mining and Metallurgy, 1981.
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