APA

King D., Falkenback P, Concawe, King D. & Falkenback P. (2001). Environmental classification of petroleum substances - summary data and rationale. Brussels: Concawe.

Chicago

King D, Falkenback P, Concawe, King D and Falkenback P. 2001. Environmental classification of petroleum substances - summary data and rationale. Brussels: Concawe.

Harvard

King D., Falkenback P, Concawe, King D. and Falkenback P. (2001). Environmental classification of petroleum substances - summary data and rationale. Brussels: Concawe.

MLA

King D, Falkenback P, Concawe, King D and Falkenback P. Environmental classification of petroleum substances - summary data and rationale. Brussels: Concawe. 2001.