APA

American Petroleum Institute A., . (1974). Ignition risks of ordinary telephones. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1974. Ignition risks of ordinary telephones. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1974). Ignition risks of ordinary telephones. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Ignition risks of ordinary telephones. Washington: American Petroleum Institute, API. 1974.