Dyfyniad APA

Sawyer, G., Salerno, G., Le Blond, J., Martin, R., Spampinato, L., Roberts, T., . . . Oppenheimer, C. (2011). Gas and aerosol emissions from Villarrica volcano, Chile.

Dyfyniad Arddull Chicago

Sawyer, G., et al. Gas and Aerosol Emissions from Villarrica Volcano, Chile. 2011.

Dyfyniad MLA

Sawyer, G., et al. Gas and Aerosol Emissions from Villarrica Volcano, Chile. 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.