APA

American Petroleum Institute A., . (1998). Specification on end closures, connectors and swivels. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1998. Specification on end closures, connectors and swivels. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1998). Specification on end closures, connectors and swivels. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Specification on end closures, connectors and swivels. Washington: American Petroleum Institute, API. 1998.