APA
Ashworth E., . (1985). Rock Mech 26 Us-Rsch & Eng Apl. : CRC Press.
Chicago
Ashworth Eileen, . 1985. Rock Mech 26 Us-Rsch & Eng Apl. : CRC Press.
Harvard
Ashworth E., . (1985). Rock Mech 26 Us-Rsch & Eng Apl. : CRC Press.
MLA
Ashworth Eileen, . Rock Mech 26 Us-Rsch & Eng Apl. : CRC Press. 1985.