APA

Lewis S. J., Concawe & Lewis S. J. (1996). A year long study of ambient air concentrations of benzene around a service station. Brussels: Concawe.

Chicago

Lewis S J, Concawe and Lewis S J. 1996. A year long study of ambient air concentrations of benzene around a service station. Brussels: Concawe.

Harvard

Lewis S. J., Concawe and Lewis S. J. (1996). A year long study of ambient air concentrations of benzene around a service station. Brussels: Concawe.

MLA

Lewis S J, Concawe and Lewis S J. A year long study of ambient air concentrations of benzene around a service station. Brussels: Concawe. 1996.