Cita APA (7th ed.)

Wyllie, D. C. (2015). Rock fall engineering. CRC Press.

Cita Chicago (17th ed.)

Wyllie, Duncan C. Rock Fall Engineering. Boca Raton, FL: CRC Press, 2015.

Cita MLA (9th ed.)

Wyllie, Duncan C. Rock Fall Engineering. CRC Press, 2015.