APA

American Petroleum Institute A., . (1979). Four - Ring condensed aromatic compounds. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1979. Four - Ring condensed aromatic compounds. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1979). Four - Ring condensed aromatic compounds. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Four - Ring condensed aromatic compounds. Washington: American Petroleum Institute, API. 1979.