APA
American Petroleum Institute A., . (1995). Technical Report on material toughness. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 1995. Technical Report on material toughness. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (1995). Technical Report on material toughness. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Technical Report on material toughness. Washington: American Petroleum Institute, API. 1995.