APA
Wei R. P., Gangloff R. P. & National symposium on fracture mechanics. (1989). Fracture mechanics; perspectives and directions. Philadelphia: ASTM.
Chicago
Wei R P, Gangloff R P and National symposium on fracture mechanics. 1989. Fracture mechanics; perspectives and directions. Philadelphia: ASTM.
Harvard
Wei R. P., Gangloff R. P. and National symposium on fracture mechanics. (1989). Fracture mechanics; perspectives and directions. Philadelphia: ASTM.
MLA
Wei R P, Gangloff R P and National symposium on fracture mechanics. Fracture mechanics; perspectives and directions. Philadelphia: ASTM. 1989.