APA (7th ed.) Citation

American Petroleum Institute & American Petroleum Institute. Production Department. (1974). API specification for drilling and well servicing structures (2nd ed.). The Institute.

Chicago Style (17th ed.) Citation

American Petroleum Institute and American Petroleum Institute. Production Department. API Specification for Drilling and Well Servicing Structures. 2nd ed. Dallas, Tex.: The Institute, 1974.

MLA (9th ed.) Citation

American Petroleum Institute and American Petroleum Institute. Production Department. API Specification for Drilling and Well Servicing Structures. 2nd ed. The Institute, 1974.