एपीए उद्धरण

Harry, H. R. D., & Stefanko, R. (1973). New horizons in rock mechanics [proceedings]. American society of Civil Engineers.

शिकागो स्टाइल उद्धरण

Harry, H Reginald D., और Robert Stefanko. New Horizons in Rock Mechanics [proceedings]. New York: American society of Civil Engineers, 1973.

एमएलए उद्धरण

Harry, H Reginald D., और Robert Stefanko. New Horizons in Rock Mechanics [proceedings]. American society of Civil Engineers, 1973.