Pavord, I. (2004). Cough and asthma.
Cita Chicago (17th ed.)Pavord, I. Cough and Asthma. 2004.
Cita MLA (9th ed.)Pavord, I. Cough and Asthma. 2004.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)