Cita APA (7a ed.)

ASCE & Symposium On Rock Mechanics (Thirteenth : August 30-September 1, 1971 : Urbana, Illinois). (1972). Proceedings. ASCE.

Cita Chicago Style (17a ed.)

ASCE y 1971 : Urbana Symposium On Rock Mechanics (Thirteenth : August 30-September 1. Proceedings. New York: ASCE, 1972.

Cita MLA (9a ed.)

ASCE y 1971 : Urbana Symposium On Rock Mechanics (Thirteenth : August 30-September 1. Proceedings. ASCE, 1972.