APA

American Petroleum Institute A., . (1998). Safe access/egress involving floating roofs of storage tanks in petroleum service. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1998. Safe access/egress involving floating roofs of storage tanks in petroleum service. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1998). Safe access/egress involving floating roofs of storage tanks in petroleum service. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Safe access/egress involving floating roofs of storage tanks in petroleum service. Washington: American Petroleum Institute, API. 1998.