Cita APA (7a ed.)

Hoek, E., & Brown, E. T. Underground excavations in rock. Institution of Mining and Metallurgy.

Cita Chicago Style (17a ed.)

Hoek, Evert, y E. T. Brown. Underground Excavations in Rock. London: Institution of Mining and Metallurgy.

Cita MLA (9a ed.)

Hoek, Evert, y E. T. Brown. Underground Excavations in Rock. Institution of Mining and Metallurgy.