Cita APA

Barra, R., Quiroz, R., Saez, K., Araneda, A., Urrutia, R., & Popp, P. (2009). Sources of polycyclic aromatic hydrocarbons (pahs) in sediments of the biobio river in south central chile.

Citación estilo Chicago

Barra, Ricardo, Roberto Quiroz, Katia Saez, Alberto Araneda, Roberto Urrutia, y Peter Popp. Sources of Polycyclic Aromatic Hydrocarbons (pahs) in Sediments of the Biobio River in South Central Chile. 2009.

Cita MLA

Barra, Ricardo, et al. Sources of Polycyclic Aromatic Hydrocarbons (pahs) in Sediments of the Biobio River in South Central Chile. 2009.