APA
Ninth National Symposium on Fracture Mechanics, . (1976). Cracks and fracture. American Society for Testing and Materials: Philadelphia.
Chicago
Ninth National Symposium on Fracture Mechanics, . 1976. Cracks and fracture. American Society for Testing and Materials: Philadelphia.
Harvard
Ninth National Symposium on Fracture Mechanics, . (1976). Cracks and fracture. American Society for Testing and Materials: Philadelphia.
MLA
Ninth National Symposium on Fracture Mechanics, . Cracks and fracture. American Society for Testing and Materials: Philadelphia. 1976.