Dyfyniad APA

Rodríguez, S., & Herrera, J. (2004). Air quality in the capital between 1993 and 2003.

Dyfyniad Arddull Chicago

Rodríguez, Susana, y Jorge Herrera. Air Quality in the Capital between 1993 and 2003. 2004.

Dyfyniad MLA

Rodríguez, Susana, y Jorge Herrera. Air Quality in the Capital between 1993 and 2003. 2004.

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