Cita APA (7th ed.)

Hudson, J. A. (1992). Rock engineering systems: Theory and practice. Ellis Horwood.

Cita Chicago (17th ed.)

Hudson, John A. Rock Engineering Systems: Theory and Practice. New York: Ellis Horwood, 1992.

Cita MLA (9th ed.)

Hudson, John A. Rock Engineering Systems: Theory and Practice. Ellis Horwood, 1992.