APA

Hoek E., Brown E. T. & Brown E. T. (1980). Underground excavations in rock. London: The Institution of Mining and Metallurgy.

Chicago

Hoek Evert, Brown Edwin Thomas and Brown Edwin Thomas. 1980. Underground excavations in rock. London: The Institution of Mining and Metallurgy.

Harvard

Hoek E., Brown E. T. and Brown E. T. (1980). Underground excavations in rock. London: The Institution of Mining and Metallurgy.

MLA

Hoek Evert, Brown Edwin Thomas and Brown Edwin Thomas. Underground excavations in rock. London: The Institution of Mining and Metallurgy. 1980.