Colwill, D. M., Butler, J. D., & Crossley, P. (1981). Polynuclear aromatic hydrocarbons in the atmosphere in Birmingham. Transport and Road Research Laboratory.
Citazione stile Chigago Style (17a edizione)Colwill, D. M., J. D. Butler, e P. Crossley. Polynuclear Aromatic Hydrocarbons in the Atmosphere in Birmingham. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.
Citatione MLA (9a ed.)Colwill, D. M., et al. Polynuclear Aromatic Hydrocarbons in the Atmosphere in Birmingham. Transport and Road Research Laboratory, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.