Cita APA (7a ed.)

American Petroleum Institute. (2013). Specification for quality management system requirements for manufacturing organizations for the petroleum and natural gas industry (9a. ed.). American Petroleum Institute.

Cita Chicago Style (17a ed.)

American Petroleum Institute. Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry. 9a. ed. Washington: American Petroleum Institute, 2013.

Cita MLA (8a ed.)

American Petroleum Institute. Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry. 9a. ed. American Petroleum Institute, 2013.