Cita APA

Etzel, R. A. (1999). Air pollution and bronchitic symptoms in Southern California children with asthma.

Chicago Style Citation

Etzel, R A. Air Pollution and Bronchitic Symptoms in Southern California Children With Asthma. 1999.

Cita MLA

Etzel, R A. Air Pollution and Bronchitic Symptoms in Southern California Children With Asthma. 1999.

Atenció: Aquestes cites poden no estar 100% correctes.