APA

American Petroleum Institute A., . (2013). Recommended practice for design and installation, and maintenance of electrical systems for fixed and floating offshore petroleum facilities for unclassified and class I, zone 0, zone 1 and zone 2 locations. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2013. Recommended practice for design and installation, and maintenance of electrical systems for fixed and floating offshore petroleum facilities for unclassified and class I, zone 0, zone 1 and zone 2 locations. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2013). Recommended practice for design and installation, and maintenance of electrical systems for fixed and floating offshore petroleum facilities for unclassified and class I, zone 0, zone 1 and zone 2 locations. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Recommended practice for design and installation, and maintenance of electrical systems for fixed and floating offshore petroleum facilities for unclassified and class I, zone 0, zone 1 and zone 2 locations. Washington: American Petroleum Institute, API. 2013.