APA

American Petroleum Institute A., . (1995). Equipment marking color-symbol system chart. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1995. Equipment marking color-symbol system chart. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1995). Equipment marking color-symbol system chart. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Equipment marking color-symbol system chart. Washington: American Petroleum Institute, API. 1995.