APA

Defur P. O., Bender M. E., American Petroleum Institute A., Defur P. O. & Bender M. E. (1987). Polynuclear hydrocarbons in sediments and clams in the vicinity of a refinery outfall. Washington: American Petroleum Institute, API.

Chicago

Defur P O, Bender Michael E, American Petroleum Institute API, Defur P O and Bender Michael E. 1987. Polynuclear hydrocarbons in sediments and clams in the vicinity of a refinery outfall. Washington: American Petroleum Institute, API.

Harvard

Defur P. O., Bender M. E., American Petroleum Institute A., Defur P. O. and Bender M. E. (1987). Polynuclear hydrocarbons in sediments and clams in the vicinity of a refinery outfall. Washington: American Petroleum Institute, API.

MLA

Defur P O, Bender Michael E, American Petroleum Institute API, Defur P O and Bender Michael E. Polynuclear hydrocarbons in sediments and clams in the vicinity of a refinery outfall. Washington: American Petroleum Institute, API. 1987.